51516560630 has 32 divisors (see below), whose sum is σ = 95403157344. Its totient is φ = 20020974336.

The previous prime is 51516560617. The next prime is 51516560653. The reversal of 51516560630 is 3606561515.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 477737 + ... + 575556.

It is an arithmetic number, because the mean of its divisors is an integer number (2981348667).

Almost surely, 2^51516560630 is an apocalyptic number.

51516560630 is a deficient number, since it is larger than the sum of its proper divisors (43886596714).

51516560630 is a wasteful number, since it uses less digits than its factorization.

51516560630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053440.

The product of its (nonzero) digits is 81000, while the sum is 38.

The spelling of 51516560630 in words is "fifty-one billion, five hundred sixteen million, five hundred sixty thousand, six hundred thirty".