51166405131356 has 48 divisors (see below), whose sum is σ = 94622661692160. Its totient is φ = 24141959539200.

The previous prime is 51166405131319. The next prime is 51166405131407. The reversal of 51166405131356 is 65313150466115.

It is a super-2 number, since 2×51166405131356² (a number of 28 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51166405131356.

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, 56699081 + ... + 57594431.

It is an arithmetic number, because the mean of its divisors is an integer number (1971305451920).

Almost surely, 2^{51166405131356} is an apocalyptic number.

It is an amenable number.

51166405131356 is a deficient number, since it is larger than the sum of its proper divisors (43456256560804).

51166405131356 is a wasteful number, since it uses less digits than its factorization.

51166405131356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 898314 (or 898312 counting only the distinct ones).

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 51166405131356 in words is "fifty-one trillion, one hundred sixty-six billion, four hundred five million, one hundred thirty-one thousand, three hundred fifty-six".