My math doesn't compute with yours: depending on how you define a TB(memory tends to favour the latter definition, but YMMV): 1,000,000,000,000 / 7.8billion =

My math doesn't compute with yours: depending on how you define a TB(memory tends to favour the latter definition, but YMMV): 1,000,000,000,000 / 7.8billion = 128.21 bytes per human. 1,099,511,627,776 / 7.8billion = 140.96 bytes per human. population source via Wikipedia.