$17 trillion would be $1000 bills stacked 1,139 miles high.
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The highest current US denomination is $100 ... which would make your stack 11,390 miles high assuming there is very little compression from the weight of the money ... $17T in used hundreds would weigh 340,000,000 lbs using the drug dealer counting “shortcut” of 20# per million in hundreds.
$1000 bills exist. They are just no longer in circulation.
assuming there is very little compression from the weight of the money
The math relies on .0043 inches, the thickness of a US paper note.