51516560626 has 16 divisors (see below), whose sum is σ = 80835729408. Its totient is φ = 24576904000.

The previous prime is 51516560617. The next prime is 51516560653. The reversal of 51516560626 is 62606561515.

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, 1377970 + ... + 1414861.

It is an arithmetic number, because the mean of its divisors is an integer number (5052233088).

Almost surely, 2^51516560626 is an apocalyptic number.

51516560626 is a deficient number, since it is larger than the sum of its proper divisors (29319168782).

51516560626 is a wasteful number, since it uses less digits than its factorization.

51516560626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2793257.

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 51516560626 in words is "fifty-one billion, five hundred sixteen million, five hundred sixty thousand, six hundred twenty-six".