51296215972 has 24 divisors (see below), whose sum is σ = 90233136000. Its totient is φ = 25515647520.

The previous prime is 51296215963. The next prime is 51296215991. The reversal of 51296215972 is 27951269215.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 592197 + ... + 673267.

It is an arithmetic number, because the mean of its divisors is an integer number (3759714000).

Almost surely, 2^51296215972 is an apocalyptic number.

It is an amenable number.

51296215972 is a deficient number, since it is larger than the sum of its proper divisors (38936920028).

51296215972 is a wasteful number, since it uses less digits than its factorization.

51296215972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81891 (or 81889 counting only the distinct ones).

The product of its digits is 680400, while the sum is 49.

The spelling of 51296215972 in words is "fifty-one billion, two hundred ninety-six million, two hundred fifteen thousand, nine hundred seventy-two".