51568608708 has 36 divisors (see below), whose sum is σ = 132490939308. Its totient is φ = 16907739840.

The previous prime is 51568608671. The next prime is 51568608761. The reversal of 51568608708 is 80780686515.

51568608708 is a `hidden beast` number, since 5 + 1 + 568 + 6 + 0 + 8 + 70 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 27508876164 + 24059732544 = 165858^2 + 155112^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11739291 + ... + 11743682.

Almost surely, 2^51568608708 is an apocalyptic number.

It is an amenable number.

51568608708 is an abundant number, since it is smaller than the sum of its proper divisors (80922330600).

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

51568608708 is a wasteful number, since it uses less digits than its factorization.

51568608708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23483044 (or 23483039 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 54.

The spelling of 51568608708 in words is "fifty-one billion, five hundred sixty-eight million, six hundred eight thousand, seven hundred eight".