51568808268172 has 192 divisors, whose sum is σ = 106199009280000. Its totient is φ = 21695017881600.

The previous prime is 51568808268169. The next prime is 51568808268193. The reversal of 51568808268172 is 27186280886515.

It is a junction number, because it is equal to n+sod(n) for n = 51568808268098 and 51568808268107.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 17912054229 + ... + 17912057107.

It is an arithmetic number, because the mean of its divisors is an integer number (553119840000).

Almost surely, 2^{51568808268172} is an apocalyptic number.

51568808268172 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

51568808268172 is an abundant number, since it is smaller than the sum of its proper divisors (54630201011828).

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

51568808268172 is a wasteful number, since it uses less digits than its factorization.

51568808268172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4904 (or 4902 counting only the distinct ones).

The product of its (nonzero) digits is 103219200, while the sum is 67.

The spelling of 51568808268172 in words is "fifty-one trillion, five hundred sixty-eight billion, eight hundred eight million, two hundred sixty-eight thousand, one hundred seventy-two".