18086590512 has 120 divisors (see below), whose sum is σ = 52330181904. Its totient is φ = 5827756032.

The previous prime is 18086590471. The next prime is 18086590541. The reversal of 18086590512 is 21509568081.

It is a happy number.

18086590512 is a `hidden beast` number, since 1 + 8 + 0 + 8 + 6 + 590 + 51 + 2 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 585568 + ... + 615680.

Almost surely, 2^18086590512 is an apocalyptic number.

18086590512 is a gapful number since it is divisible by the number (12) 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 18086590512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26165090952).

18086590512 is an abundant number, since it is smaller than the sum of its proper divisors (34243591392).

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

18086590512 is a wasteful number, since it uses less digits than its factorization.

18086590512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30267 (or 30258 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 45.

The spelling of 18086590512 in words is "eighteen billion, eighty-six million, five hundred ninety thousand, five hundred twelve".