51665560115562 has 12 divisors (see below), whose sum is σ = 111942046917090. Its totient is φ = 17221853371848.

The previous prime is 51665560115551. The next prime is 51665560115581. The reversal of 51665560115562 is 26551106556615.

51665560115562 is a `hidden beast` number, since 5 + 1 + 6 + 6 + 5 + 5 + 60 + 1 + 15 + 562 = 666.

It can be written as a sum of positive squares in only one way, i.e., 51266301682401 + 399258433161 = 7160049^2 + 631869^2 .

It is a junction number, because it is equal to n+sod(n) for n = 51665560115499 and 51665560115508.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1435154447637 + ... + 1435154447672.

Almost surely, 2^{51665560115562} is an apocalyptic number.

51665560115562 is an abundant number, since it is smaller than the sum of its proper divisors (60276486801528).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51665560115562 is a wasteful number, since it uses less digits than its factorization.

51665560115562 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2870308895317 (or 2870308895314 counting only the distinct ones).

The product of its (nonzero) digits is 8100000, while the sum is 54.

The spelling of 51665560115562 in words is "fifty-one trillion, six hundred sixty-five billion, five hundred sixty million, one hundred fifteen thousand, five hundred sixty-two".