18240112572 has 36 divisors (see below), whose sum is σ = 46781118888. Its totient is φ = 5527306400.

The previous prime is 18240112559. The next prime is 18240112589. The reversal of 18240112572 is 27521104281.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent 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, 6279579 + ... + 6282482.

Almost surely, 2^18240112572 is an apocalyptic number.

18240112572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18240112572 is an abundant number, since it is smaller than the sum of its proper divisors (28541006316).

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

18240112572 is a wasteful number, since it uses less digits than its factorization.

18240112572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12562090 (or 12562077 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 33.

The spelling of 18240112572 in words is "eighteen billion, two hundred forty million, one hundred twelve thousand, five hundred seventy-two".