18008752032 has 60 divisors (see below), whose sum is σ = 52963247106. Its totient is φ = 6002916480.

The previous prime is 18008751953. The next prime is 18008752051. The reversal of 18008752032 is 23025780081.

It can be written as a sum of positive squares in only one way, i.e., 16786830096 + 1221921936 = 129564^2 + 34956^2 .

It is a super-3 number, since 3×18008752032³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 3471319 + ... + 3476502.

Almost surely, 2^18008752032 is an apocalyptic number.

18008752032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18008752032 is an abundant number, since it is smaller than the sum of its proper divisors (34954495074).

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

18008752032 is an equidigital number, since it uses as much as digits as its factorization.

18008752032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6947843 (or 6947826 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The spelling of 18008752032 in words is "eighteen billion, eight million, seven hundred fifty-two thousand, thirty-two".