18080235372 has 24 divisors (see below), whose sum is σ = 42191751616. Its totient is φ = 6026097168.

The previous prime is 18080235367. The next prime is 18080235409. The reversal of 18080235372 is 27353208081.

It is a super-2 number, since 2×18080235372² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18080235372.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42843 + ... + 194925.

Almost surely, 2^18080235372 is an apocalyptic number.

18080235372 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18080235372 is an abundant number, since it is smaller than the sum of its proper divisors (24111516244).

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

18080235372 is a wasteful number, since it uses less digits than its factorization.

18080235372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161997 (or 161995 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 39.

The spelling of 18080235372 in words is "eighteen billion, eighty million, two hundred thirty-five thousand, three hundred seventy-two".