51808285712008 has 32 divisors (see below), whose sum is σ = 114598973007360. Its totient is φ = 21487307437440.

The previous prime is 51808285711997. The next prime is 51808285712023. The reversal of 51808285712008 is 80021758280815.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 51808285712008.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14921739541 + ... + 14921743012.

It is an arithmetic number, because the mean of its divisors is an integer number (3581217906480).

Almost surely, 2^{51808285712008} is an apocalyptic number.

It is an amenable number.

51808285712008 is an abundant number, since it is smaller than the sum of its proper divisors (62790687295352).

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

51808285712008 is a wasteful number, since it uses less digits than its factorization.

51808285712008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29843482597 (or 29843482593 counting only the distinct ones).

The product of its (nonzero) digits is 2867200, while the sum is 55.

The spelling of 51808285712008 in words is "fifty-one trillion, eight hundred eight billion, two hundred eighty-five million, seven hundred twelve thousand, eight".