51333994056 has 16 divisors (see below), whose sum is σ = 128334985200. Its totient is φ = 17111331344.

The previous prime is 51333994039. The next prime is 51333994073. The reversal of 51333994056 is 65049933315.

It is an interprime number because it is at equal distance from previous prime (51333994039) and next prime (51333994073).

It is a super-2 number, since 2×51333994056² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51333993996 and 51333994014.

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, 1069458186 + ... + 1069458233.

It is an arithmetic number, because the mean of its divisors is an integer number (8020936575).

Almost surely, 2^51333994056 is an apocalyptic number.

It is an amenable number.

51333994056 is an abundant number, since it is smaller than the sum of its proper divisors (77000991144).

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

51333994056 is a wasteful number, since it uses less digits than its factorization.

51333994056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2138916428 (or 2138916424 counting only the distinct ones).

The product of its (nonzero) digits is 1312200, while the sum is 48.

The spelling of 51333994056 in words is "fifty-one billion, three hundred thirty-three million, nine hundred ninety-four thousand, fifty-six".