51767579064 has 16 divisors (see below), whose sum is σ = 129418947720. Its totient is φ = 17255859680.

The previous prime is 51767579047. The next prime is 51767579077. The reversal of 51767579064 is 46097576715.

It is a happy number.

It is a super-2 number, since 2×51767579064² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51767578995 and 51767579013.

It is a congruent number.

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, 1078491207 + ... + 1078491254.

Almost surely, 2^51767579064 is an apocalyptic number.

It is an amenable number.

51767579064 is an abundant number, since it is smaller than the sum of its proper divisors (77651368656).

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

51767579064 is a wasteful number, since it uses less digits than its factorization.

51767579064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2156982470 (or 2156982466 counting only the distinct ones).

The product of its (nonzero) digits is 11113200, while the sum is 57.

The spelling of 51767579064 in words is "fifty-one billion, seven hundred sixty-seven million, five hundred seventy-nine thousand, sixty-four".