51197818560 has 168 divisors, whose sum is σ = 189092525040. Its totient is φ = 11702347776.

The previous prime is 51197818541. The next prime is 51197818601. The reversal of 51197818560 is 6581879115.

51197818560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (168).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 497155 + ... + 591234.

Almost surely, 2^51197818560 is an apocalyptic number.

It is an amenable number.

51197818560 is an abundant number, since it is smaller than the sum of its proper divisors (137894706480).

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

51197818560 is a wasteful number, since it uses less digits than its factorization.

51197818560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088423 (or 1088406 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 51.

The spelling of 51197818560 in words is "fifty-one billion, one hundred ninety-seven million, eight hundred eighteen thousand, five hundred sixty".