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There are 100 pennies in a dollar, so to find out how many pennies are in a trillion dollars, you would multiply 100 by 1 trillion. This calculation results in 100,000,000,000,000 (100 trillion) pennies in a trillion dollars.
A trillion is a million million (1,000,000,000,000). There are 100 pennies in 1 dollar.Therefore, 1,000,000,000,000 x 100 = 100,000,000,000,000 (one hundred trillion pennies).
One trillion dollars
A mole of something contains 6.02214179×10^23 of them, so a stack of one mole of pennies would be: 6.02214179×10^23 x 1 mm = 6.02214179×10^23 mm high.
$1,389,473,684.20 Assuming that a single bill is 0.0043 inches thick. You would have to have a stack of 100's 10,795.45 miles high to equal the United States national debt of 15 trillion dollars.