What is 500000000000000000000000?

Answer 1

500,000,000,000,000,000,000,000 = 5 x 1023 = 500 sextillion.

This is just shy of the number of molecules in one mole of any substance (6.022×1023 = Avogadro's number).

This number also happens to be in the ballpark of the diameter, in miles, of the observable universe, based on latest astronomic research (90 billion light years, multiplied by 6 trillion miles per year).

Answer 2

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