51215312984 has 16 divisors (see below), whose sum is σ = 104758594920. Its totient is φ = 23279687680.

The previous prime is 51215312977. The next prime is 51215312999. The reversal of 51215312984 is 48921351215.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 290996009 + ... + 290996184.

Almost surely, 2^51215312984 is an apocalyptic number.

It is an amenable number.

51215312984 is an abundant number, since it is smaller than the sum of its proper divisors (53543281936).

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

51215312984 is a wasteful number, since it uses less digits than its factorization.

51215312984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 581992210 (or 581992206 counting only the distinct ones).

The product of its digits is 86400, while the sum is 41.

The spelling of 51215312984 in words is "fifty-one billion, two hundred fifteen million, three hundred twelve thousand, nine hundred eighty-four".