51180164568 has 96 divisors (see below), whose sum is σ = 157132138800. Its totient is φ = 14918909184.

The previous prime is 51180164561. The next prime is 51180164573. The reversal of 51180164568 is 86546108115.

51180164568 is a `hidden beast` number, since 5 + 1 + 1 + 80 + 1 + 6 + 4 + 568 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51180164561) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1421155 + ... + 1456722.

Almost surely, 2^51180164568 is an apocalyptic number.

It is an amenable number.

51180164568 is an abundant number, since it is smaller than the sum of its proper divisors (105951974232).

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

51180164568 is a wasteful number, since it uses less digits than its factorization.

51180164568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2877921 (or 2877914 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 45.

The spelling of 51180164568 in words is "fifty-one billion, one hundred eighty million, one hundred sixty-four thousand, five hundred sixty-eight".