A dollar bill weighs 1 gram, or 0.001 kg. Assuming it’s denominated in $100 bills, that bag weighs roughly $4.4 * 10^10 * 0.001 / $100 = 4.4 * 10^5 = 440,000 kg.

No one should be allowed to have a billion dollars.

bag-holding generally implies what the bag contains is of substantially less value than what was paid...

Fun arithmetic nonetheless

I know the expression, I was just taking it literally to be humorous.