18171366323364 has 30 divisors (see below), whose sum is σ = 47503540975814. Its totient is φ = 6057122107680.

The previous prime is 18171366323359. The next prime is 18171366323413. The reversal of 18171366323364 is 46332366317181.

It is a happy number.

18171366323364 is a `hidden beast` number, since 1 + 8 + 171 + 36 + 63 + 23 + 364 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13685264409600 + 4486101913764 = 3699360^2 + 2118042^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 18171366323364.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 28042231657 + ... + 28042232304.

Almost surely, 2^{18171366323364} is an apocalyptic number.

It is an amenable number.

18171366323364 is an abundant number, since it is smaller than the sum of its proper divisors (29332174652450).

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

18171366323364 is a wasteful number, since it uses less digits than its factorization.

18171366323364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56084463977 (or 56084463966 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 54.

The spelling of 18171366323364 in words is "eighteen trillion, one hundred seventy-one billion, three hundred sixty-six million, three hundred twenty-three thousand, three hundred sixty-four".