15585644664116 has 12 divisors (see below), whose sum is σ = 27275894590560. Its totient is φ = 7792531923960.

The previous prime is 15585644663987. The next prime is 15585644664137. The reversal of 15585644664116 is 61146644658551.

It is a super-2 number, since 2×15585644664116² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72481250 + ... + 72695961.

It is an arithmetic number, because the mean of its divisors is an integer number (2272991215880).

Almost surely, 2^{15585644664116} is an apocalyptic number.

It is an amenable number.

15585644664116 is a deficient number, since it is larger than the sum of its proper divisors (11690249926444).

15585644664116 is a wasteful number, since it uses less digits than its factorization.

15585644664116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145204054 (or 145204052 counting only the distinct ones).

The product of its digits is 82944000, while the sum is 62.

The spelling of 15585644664116 in words is "fifteen trillion, five hundred eighty-five billion, six hundred forty-four million, six hundred sixty-four thousand, one hundred sixteen".