51612500768 has 24 divisors (see below), whose sum is σ = 101652864768. Its totient is φ = 25795900224.

The previous prime is 51612500741. The next prime is 51612500777. The reversal of 51612500768 is 86700521615.

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, 242096 + ... + 402287.

It is an arithmetic number, because the mean of its divisors is an integer number (4235536032).

Almost surely, 2^51612500768 is an apocalyptic number.

It is an amenable number.

51612500768 is a deficient number, since it is larger than the sum of its proper divisors (50040364000).

51612500768 is a wasteful number, since it uses less digits than its factorization.

51612500768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 646896 (or 646888 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 41.

The spelling of 51612500768 in words is "fifty-one billion, six hundred twelve million, five hundred thousand, seven hundred sixty-eight".