51565556105116 has 96 divisors (see below), whose sum is σ = 93971949664320. Its totient is φ = 24745474473984.

The previous prime is 51565556105101. The next prime is 51565556105117. The reversal of 51565556105116 is 61150165556515.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51565556105117) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1944902676 + ... + 1944929188.

It is an arithmetic number, because the mean of its divisors is an integer number (978874475670).

Almost surely, 2^{51565556105116} is an apocalyptic number.

It is an amenable number.

51565556105116 is a deficient number, since it is larger than the sum of its proper divisors (42406393559204).

51565556105116 is a wasteful number, since it uses less digits than its factorization.

51565556105116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27863 (or 27861 counting only the distinct ones).

The product of its (nonzero) digits is 3375000, while the sum is 52.

The spelling of 51565556105116 in words is "fifty-one trillion, five hundred sixty-five billion, five hundred fifty-six million, one hundred five thousand, one hundred sixteen".