51560511660605 has 16 divisors (see below), whose sum is σ = 62009487014400. Its totient is φ = 41157200692800.

The previous prime is 51560511660517. The next prime is 51560511660727. The reversal of 51560511660605 is 50606611506515.

It is a de Polignac number, because none of the positive numbers 2^k-51560511660605 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51560511660605.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7809236 + ... + 12810354.

It is an arithmetic number, because the mean of its divisors is an integer number (3875592938400).

Almost surely, 2^{51560511660605} is an apocalyptic number.

It is an amenable number.

51560511660605 is a deficient number, since it is larger than the sum of its proper divisors (10448975353795).

51560511660605 is a wasteful number, since it uses less digits than its factorization.

51560511660605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5005684.

The product of its (nonzero) digits is 810000, while the sum is 47.

The spelling of 51560511660605 in words is "fifty-one trillion, five hundred sixty billion, five hundred eleven million, six hundred sixty thousand, six hundred five".