51538676872 has 16 divisors (see below), whose sum is σ = 97330237200. Its totient is φ = 25583946960.

The previous prime is 51538676857. The next prime is 51538676899. The reversal of 51538676872 is 27867683515.

It is a happy 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, 23172754 + ... + 23174977.

It is an arithmetic number, because the mean of its divisors is an integer number (6083139825).

Almost surely, 2^51538676872 is an apocalyptic number.

It is an amenable number.

51538676872 is a deficient number, since it is larger than the sum of its proper divisors (45791560328).

51538676872 is a wasteful number, since it uses less digits than its factorization.

51538676872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46347876 (or 46347872 counting only the distinct ones).

The product of its digits is 16934400, while the sum is 58.

The spelling of 51538676872 in words is "fifty-one billion, five hundred thirty-eight million, six hundred seventy-six thousand, eight hundred seventy-two".