A stack of one trillion dollar bills is over 6,700 miles high.
You are both right and wrong.
A dollar bill is .0043 inches thick.
100,000,000 dollar bills would be 6.79 miles tall
1 billion dollars would be 67.9 miles tall
1 trillion dollars would be 67,900 miles tall
Our current national debt of approximately 20 trillion dollars would reach from the Earth to the moon approximately 6 times (1.38 million miles tall)