18016867088 has 60 divisors (see below), whose sum is σ = 38942559600. Its totient is φ = 8067195840.

The previous prime is 18016867039. The next prime is 18016867159. The reversal of 18016867088 is 88076861081.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 60263 + ... + 199161.

It is an arithmetic number, because the mean of its divisors is an integer number (649042660).

Almost surely, 2^18016867088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18016867088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19471279800).

18016867088 is an abundant number, since it is smaller than the sum of its proper divisors (20925692512).

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

18016867088 is a wasteful number, since it uses less digits than its factorization.

18016867088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138996 (or 138979 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 53.

The spelling of 18016867088 in words is "eighteen billion, sixteen million, eight hundred sixty-seven thousand, eighty-eight".