51023533512 has 64 divisors (see below), whose sum is σ = 148883281920. Its totient is φ = 14267976768.

The previous prime is 51023533493. The next prime is 51023533531. The reversal of 51023533512 is 21533532015.

It is an interprime number because it is at equal distance from previous prime (51023533493) and next prime (51023533531).

It is a self number, because there is not a number n which added to its sum of digits gives 51023533512.

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 15 ways as a sum of consecutive naturals, for example, 3223078 + ... + 3238869.

It is an arithmetic number, because the mean of its divisors is an integer number (2326301280).

Almost surely, 2^51023533512 is an apocalyptic number.

It is an amenable number.

51023533512 is an abundant number, since it is smaller than the sum of its proper divisors (97859748408).

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

51023533512 is a wasteful number, since it uses less digits than its factorization.

51023533512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6462010 (or 6462006 counting only the distinct ones).

The product of its (nonzero) digits is 13500, while the sum is 30.

The spelling of 51023533512 in words is "fifty-one billion, twenty-three million, five hundred thirty-three thousand, five hundred twelve".