51823665132 has 12 divisors (see below), whose sum is σ = 120921885336. Its totient is φ = 17274555040.

The previous prime is 51823665109. The next prime is 51823665161. The reversal of 51823665132 is 23156632815.

It is a tau number, because it is divible by the number of its divisors (12).

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, 2159319369 + ... + 2159319392.

It is an arithmetic number, because the mean of its divisors is an integer number (10076823778).

Almost surely, 2^51823665132 is an apocalyptic number.

It is an amenable number.

51823665132 is an abundant number, since it is smaller than the sum of its proper divisors (69098220204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51823665132 is a wasteful number, since it uses less digits than its factorization.

51823665132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4318638768 (or 4318638766 counting only the distinct ones).

The product of its digits is 259200, while the sum is 42.

The spelling of 51823665132 in words is "fifty-one billion, eight hundred twenty-three million, six hundred sixty-five thousand, one hundred thirty-two".