> 2008 – 80 intact warheads, of which 50 are re-entry vehicles for delivery by ballistic missiles, and the rest bombs for delivery by aircraft. Total military plutonium stockpile 340–560 kg.[186]
They probably have way more now 18 years later though.
I wouldn't neccesarily think so. Nukes are really expensive to create and maintain, but once you have "enough" getting more doesn't really provide much additional benefit.