65939979250 has 64 divisors (see below), whose sum is σ = 124801822080. Its totient is φ = 26086536000.

The previous prime is 65939979241. The next prime is 65939979289. The reversal of 65939979250 is 5297993956.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8594416 + ... + 8602084.

It is an arithmetic number, because the mean of its divisors is an integer number (1950028470).

Almost surely, 2^65939979250 is an apocalyptic number.

65939979250 is a deficient number, since it is larger than the sum of its proper divisors (58861842830).

65939979250 is a wasteful number, since it uses less digits than its factorization.

65939979250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8060 (or 8050 counting only the distinct ones).

The product of its (nonzero) digits is 41334300, while the sum is 64.

The spelling of 65939979250 in words is "sixty-five billion, nine hundred thirty-nine million, nine hundred seventy-nine thousand, two hundred fifty".