how much money does the united states really owe? .gov
The US owes a total of around 18.4 Trillion US$ Dollars. The Rest of the World owes around 15.3 Trillion US$ to the US. Who owes what to whom varies. For example: The graphics on this 2011 BBC story (below) explain who owes what to whom, the figures are 4 years out of date, but you'll get the idea!