636322011172 has 12 divisors (see below), whose sum is σ = 1113896646016. Its totient is φ = 318065826600.

The previous prime is 636322011161. The next prime is 636322011257. The reversal of 636322011172 is 271110223636.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23779704 + ... + 23806447.

Almost surely, 2^636322011172 is an apocalyptic number.

It is an amenable number.

636322011172 is a deficient number, since it is larger than the sum of its proper divisors (477574634844).

636322011172 is a wasteful number, since it uses less digits than its factorization.

636322011172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47589498 (or 47589496 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The spelling of 636322011172 in words is "six hundred thirty-six billion, three hundred twenty-two million, eleven thousand, one hundred seventy-two".