Greece’s next government may hold a trump card worth more than $510 billion if it heeds voters’ demands to renegotiate its bailout with the European Union. The nation owes about 400 billion euros ($517 billion) to private bondholders, public bodies such as the International Monetary Fund and European Central Bank, and other creditors, according to data compiled by Bloomberg. About 252 billion euros of that’s due to official organizations that used their status to avoid the losses suffered by ordinary bondholders when Greece restructured its debt two months ago.