how many atoms in human body
It really depends on the person. As you know, not every person fits to the exact same dimensions, so it would be hard to try to generalize the amount of atoms in the human body. However, I am taking a stab at anyway. There are 37.2 trillion cells in the 'average' human body, and there are 100 trillion atoms in each cell. So that comes out to be about 3 quadrillion 720 trillion atoms in the human body.