636080865338 has 16 divisors (see below), whose sum is σ = 955688630400. Its totient is φ = 317518098096.

The previous prime is 636080865337. The next prime is 636080865349. The reversal of 636080865338 is 833568080636.

It is not an unprimeable number, because it can be changed into a prime (636080865337) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14865731 + ... + 14908457.

It is an arithmetic number, because the mean of its divisors is an integer number (59730539400).

Almost surely, 2^636080865338 is an apocalyptic number.

636080865338 is a deficient number, since it is larger than the sum of its proper divisors (319607765062).

636080865338 is a wasteful number, since it uses less digits than its factorization.

636080865338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54781.

The product of its (nonzero) digits is 14929920, while the sum is 56.

The spelling of 636080865338 in words is "six hundred thirty-six billion, eighty million, eight hundred sixty-five thousand, three hundred thirty-eight".