1 billion pennies would weigh 5,511,556.55 pounds. The weight of a penny is 2.5 grams
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10 million dollars
In USD, 1,000,000 pennies= $10,000 10000 USD One million pennies is $10000.00
One modern (post-1982) US cent weighs 2.5 grams, so 4,000 pennies weigh 10,000 grams, or 10 kg.
One cent (minted 1982-present) weighs 2.5 grams. 50 of them weigh 125 grams.
Since there are 100 pennies in a dollar, the total would be 100 billion pennies.