I have seen various estimates of this which vary widely (like 10,000 to 10,000,000 years) and want to know if there is an accepted answer?

I am not interested in explanations about the identity of photons and absorption and reemission other obscure matters. I want to know in essence what is the total radiant energy inside the Sun divided by the annual rate at which it comes out. That will serve my purpose. References if possible please.