51514864372 has 12 divisors (see below), whose sum is σ = 91080405220. Its totient is φ = 25491891456.

The previous prime is 51514864319. The next prime is 51514864393. The reversal of 51514864372 is 27346841515.

It can be written as a sum of positive squares in 2 ways, for example, as 15120145296 + 36394719076 = 122964^2 + 190774^2 .

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, 66384747 + ... + 66385522.

Almost surely, 2^51514864372 is an apocalyptic number.

It is an amenable number.

51514864372 is a deficient number, since it is larger than the sum of its proper divisors (39565540848).

51514864372 is a wasteful number, since it uses less digits than its factorization.

51514864372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132770370 (or 132770368 counting only the distinct ones).

The product of its digits is 806400, while the sum is 46.

The spelling of 51514864372 in words is "fifty-one billion, five hundred fourteen million, eight hundred sixty-four thousand, three hundred seventy-two".