"Everyone in this room, stand up. Every second we're going to count a million dollars. If your net worth is less than that amount, sit down."
Most people will sit down in a second or two. Some might last ten seconds.
A billionaire will still be standing 16 minutes later. Every second, a million dollars ticking away.
TWO DAYS later, you're getting to the richest people in the world. Remember, one million dollars a second.
This seems pretty unlikely. Putin has certainly done well being a corrupt leader, and probably has control over $200B, but I doubt he has holdings that reach anywhere near that level.
Gaddafi having that much money is a bit of a joke. It would require him having many multiples of the entire country's GDP in his own personal account. Perhaps theoretically possible, but hard to believe without better proof.