1. Paul Allen, 60
Allen lives on Seattle's Mercer Island, but he recently bought a $27 million,...
2. Giorgio Armani, 79
Italian fashion designer Giorgio Armani, called "the fashion world's perennial bachelor"...3. Mikhail Prokhorov, 48
Mikhail Prokhorov, 48, is owner of NBA team the Brooklyn Nets. The Russian entrepreneur...4. Xavier Niel, 46
Xavier Niel, 46, is touted as "France's Internet king" by Forbes. His company, Iliad, is...5. David Geffen, 70
David Geffen, 70, is an American businessman who co-founded DreamWorks Animation SKG....
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