18480561216 has 112 divisors (see below), whose sum is σ = 54356617728. Its totient is φ = 5502873600.

The previous prime is 18480561193. The next prime is 18480561227. The reversal of 18480561216 is 61216508481.

It is a super-2 number, since 2×18480561216² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42045 + ... + 196796.

It is an arithmetic number, because the mean of its divisors is an integer number (485326944).

Almost surely, 2^18480561216 is an apocalyptic number.

18480561216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18480561216 is an abundant number, since it is smaller than the sum of its proper divisors (35876056512).

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

18480561216 is a wasteful number, since it uses less digits than its factorization.

18480561216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238900 (or 238890 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 42.

The spelling of 18480561216 in words is "eighteen billion, four hundred eighty million, five hundred sixty-one thousand, two hundred sixteen".