18551200085 has 16 divisors (see below), whose sum is σ = 24288023232. Its totient is φ = 13490217600.

The previous prime is 18551200039. The next prime is 18551200097. The reversal of 18551200085 is 58000215581.

It is not a de Polignac number, because 18551200085 - 2⁸ = 18551199829 is a prime.

It is a Curzon number.

It is a congruent number.

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, 693122 + ... + 719388.

It is an arithmetic number, because the mean of its divisors is an integer number (1518001452).

Almost surely, 2^18551200085 is an apocalyptic number.

It is an amenable number.

18551200085 is a deficient number, since it is larger than the sum of its proper divisors (5736823147).

18551200085 is a wasteful number, since it uses less digits than its factorization.

18551200085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39124.

The product of its (nonzero) digits is 16000, while the sum is 35.

The spelling of 18551200085 in words is "eighteen billion, five hundred fifty-one million, two hundred thousand, eighty-five".