51534572164 has 12 divisors (see below), whose sum is σ = 90195775488. Its totient is φ = 25764350600.

The previous prime is 51534572149. The next prime is 51534572197. The reversal of 51534572164 is 46127543515.

It is a self number, because there is not a number n which added to its sum of digits gives 51534572164.

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, 694132 + ... + 764779.

It is an arithmetic number, because the mean of its divisors is an integer number (7516314624).

Almost surely, 2^51534572164 is an apocalyptic number.

It is an amenable number.

51534572164 is a deficient number, since it is larger than the sum of its proper divisors (38661203324).

51534572164 is a wasteful number, since it uses less digits than its factorization.

51534572164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467746 (or 1467744 counting only the distinct ones).

The product of its digits is 504000, while the sum is 43.

The spelling of 51534572164 in words is "fifty-one billion, five hundred thirty-four million, five hundred seventy-two thousand, one hundred sixty-four".