51631675884 has 24 divisors (see below), whose sum is σ = 133859900720. Its totient is φ = 17210558592.

The previous prime is 51631675877. The next prime is 51631675933. The reversal of 51631675884 is 48857613615.

It is a happy number.

51631675884 is a `hidden beast` number, since 51 + 6 + 3 + 1 + 6 + 7 + 588 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 51631675884.

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 7 ways as a sum of consecutive naturals, for example, 239035429 + ... + 239035644.

Almost surely, 2^51631675884 is an apocalyptic number.

51631675884 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

51631675884 is an abundant number, since it is smaller than the sum of its proper divisors (82228224836).

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

51631675884 is a wasteful number, since it uses less digits than its factorization.

51631675884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478071086 (or 478071078 counting only the distinct ones).

The product of its digits is 4838400, while the sum is 54.

The spelling of 51631675884 in words is "fifty-one billion, six hundred thirty-one million, six hundred seventy-five thousand, eight hundred eighty-four".