15565110165660 has 48 divisors (see below), whose sum is σ = 47544336508032. Its totient is φ = 3773360040000.

The previous prime is 15565110165617. The next prime is 15565110165691. The reversal of 15565110165660 is 6656101156551.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11791749466 + ... + 11791750785.

It is an arithmetic number, because the mean of its divisors is an integer number (990507010584).

Almost surely, 2^{15565110165660} is an apocalyptic number.

15565110165660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15565110165660 is an abundant number, since it is smaller than the sum of its proper divisors (31979226342372).

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

15565110165660 is a wasteful number, since it uses less digits than its factorization.

15565110165660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23583500274 (or 23583500272 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 48.

The spelling of 15565110165660 in words is "fifteen trillion, five hundred sixty-five billion, one hundred ten million, one hundred sixty-five thousand, six hundred sixty".