51166906972 has 12 divisors (see below), whose sum is σ = 89544580720. Its totient is φ = 25582741056.

The previous prime is 51166906943. The next prime is 51166907009. The reversal of 51166906972 is 27960966115.

51166906972 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4228 + ... + 319924.

Almost surely, 2^51166906972 is an apocalyptic number.

It is an amenable number.

51166906972 is a deficient number, since it is larger than the sum of its proper divisors (38377673748).

51166906972 is a wasteful number, since it uses less digits than its factorization.

51166906972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356220 (or 356218 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 52.

The spelling of 51166906972 in words is "fifty-one billion, one hundred sixty-six million, nine hundred six thousand, nine hundred seventy-two".