18316505088 has 156 divisors (see below), whose sum is σ = 60467010448. Its totient is φ = 5233213440.

The previous prime is 18316505087. The next prime is 18316505149. The reversal of 18316505088 is 88050561381.

18316505088 is a `hidden beast` number, since 1 + 83 + 1 + 65 + 0 + 508 + 8 = 666.

It is not an unprimeable number, because it can be changed into a prime (18316505087) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 222558 + ... + 293538.

Almost surely, 2^18316505088 is an apocalyptic number.

18316505088 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18316505088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30233505224).

18316505088 is an abundant number, since it is smaller than the sum of its proper divisors (42150505360).

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

18316505088 is an equidigital number, since it uses as much as digits as its factorization.

18316505088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71018 (or 70993 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 45.

The spelling of 18316505088 in words is "eighteen billion, three hundred sixteen million, five hundred five thousand, eighty-eight".