18147085117185 has 32 divisors (see below), whose sum is σ = 30238142400000. Its totient is φ = 9281989719296.

The previous prime is 18147085117141. The next prime is 18147085117241. The reversal of 18147085117185 is 58171158074181.

It is a cyclic number.

It is not a de Polignac number, because 18147085117185 - 2³³ = 18138495182593 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139926585 + ... + 140056214.

It is an arithmetic number, because the mean of its divisors is an integer number (944941950000).

Almost surely, 2^{18147085117185} is an apocalyptic number.

18147085117185 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18147085117185 is a deficient number, since it is larger than the sum of its proper divisors (12091057282815).

18147085117185 is a wasteful number, since it uses less digits than its factorization.

18147085117185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279982985.

The product of its (nonzero) digits is 2508800, while the sum is 57.

The spelling of 18147085117185 in words is "eighteen trillion, one hundred forty-seven billion, eighty-five million, one hundred seventeen thousand, one hundred eighty-five".