18517035020 has 24 divisors (see below), whose sum is σ = 42420844368. Its totient is φ = 6733467200.

The previous prime is 18517035013. The next prime is 18517035083. The reversal of 18517035020 is 2053071581.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42083951 + ... + 42084390.

It is an arithmetic number, because the mean of its divisors is an integer number (1767535182).

Almost surely, 2^18517035020 is an apocalyptic number.

18517035020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18517035020 is an abundant number, since it is smaller than the sum of its proper divisors (23903809348).

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

18517035020 is a wasteful number, since it uses less digits than its factorization.

18517035020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84168361 (or 84168359 counting only the distinct ones).

The product of its (nonzero) digits is 8400, while the sum is 32.

The spelling of 18517035020 in words is "eighteen billion, five hundred seventeen million, thirty-five thousand, twenty".