Good question since the devil is all evil and God is all good.
the numbers are around ...... the numbers counted the number of people that were killed by God in the Bible. I came up with 2,476,633, which, of course, greatly underestimates God's total death toll, since it only includes those killings for which specific numbers are given. No attempt was made to include the victims of Noah's flood, Sodom and Gomorrah, or the many plagues, famines, fiery serpents, etc., with which the good book is filled. Still, 2 million is a respectable number even for world class killers. But how does this compare with Satan? How many did he kill in the Bible?
Well I can only find ten, and even these he shares with God, since God allowed him to do it as a part of a bet. I'm talking about the seven sons and three daughters of Job.
So it seems that both Satan and God share the blame (or the credit) for these killings. If so, then the tally would be:
There was a man in the land of Uz, whose name was Job ... And there were born unto him seven sons and three daughters.
And the LORD said unto Satan, Hast thou considered my servant Job, that there is none like him in the earth, a perfect and an upright man, one that feareth God, and escheweth evil? Then Satan answered the LORD ... put forth thine hand now, and touch all that he hath, and he will curse thee to thy face. And the LORD said unto Satan, Behold, all that he hath is in thy power; only upon himself put not forth thine hand. So Satan went forth from the presence of the LORD.
And there was a day when his sons and his daughters were eating and drinking wine in their eldest brother's house...And, behold, there came a great wind from the wilderness, and smote the four corners of the house, and it fell upon the young men, and they are dead; and I only am escaped alone to tell thee. -- Job 1:1-19
God .... 2,476,633
Satan .... 10