12165990594408 has 96 divisors (see below), whose sum is σ = 37682239196160. Its totient is φ = 3473634084480.

The previous prime is 12165990594383. The next prime is 12165990594451. The reversal of 12165990594408 is 80449509956121.

12165990594408 is a `hidden beast` number, since 1 + 2 + 1 + 6 + 59 + 90 + 5 + 94 + 408 = 666.

It is a super-2 number, since 2×12165990594408² (a number of 27 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7463535 + ... + 8946302.

It is an arithmetic number, because the mean of its divisors is an integer number (392523324960).

Almost surely, 2^{12165990594408} is an apocalyptic number.

12165990594408 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12165990594408 is an abundant number, since it is smaller than the sum of its proper divisors (25516248601752).

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

12165990594408 is a wasteful number, since it uses less digits than its factorization.

12165990594408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16411327 (or 16411320 counting only the distinct ones).

The product of its (nonzero) digits is 27993600, while the sum is 63.

The spelling of 12165990594408 in words is "twelve trillion, one hundred sixty-five billion, nine hundred ninety million, five hundred ninety-four thousand, four hundred eight".