10,000,000,000,000,000,000,000,000,000,000,000,000, 000,000,000,000,000,000,000,000,000,000,000,000,000, 000 or 10^78 years for the universe vs. 5,000,000,000 or 5^9 years for the sun. The good news is humanity has a really good chance of not being around when the universe twinkles out.