15116660665666 has 32 divisors (see below), whose sum is σ = 26592339013632. Its totient is φ = 6309600675840.

The previous prime is 15116660665637. The next prime is 15116660665697. The reversal of 15116660665666 is 66656606661151.

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, 22489986 + ... + 23152381.

It is an arithmetic number, because the mean of its divisors is an integer number (831010594176).

Almost surely, 2^{15116660665666} is an apocalyptic number.

15116660665666 is a deficient number, since it is larger than the sum of its proper divisors (11475678347966).

15116660665666 is a wasteful number, since it uses less digits than its factorization.

15116660665666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45642994.

The product of its (nonzero) digits is 41990400, while the sum is 61.

The spelling of 15116660665666 in words is "fifteen trillion, one hundred sixteen billion, six hundred sixty million, six hundred sixty-five thousand, six hundred sixty-six".