18086312472 has 32 divisors (see below), whose sum is σ = 46437831600. Its totient is φ = 5865830784.

The previous prime is 18086312467. The next prime is 18086312479. The reversal of 18086312472 is 27421368081.

It is a super-2 number, since 2×18086312472² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18086312479) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10182847 + ... + 10184622.

Almost surely, 2^18086312472 is an apocalyptic number.

18086312472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18086312472 is an abundant number, since it is smaller than the sum of its proper divisors (28351519128).

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

18086312472 is a wasteful number, since it uses less digits than its factorization.

18086312472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20367515 (or 20367511 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The spelling of 18086312472 in words is "eighteen billion, eighty-six million, three hundred twelve thousand, four hundred seventy-two".