18480559008 has 48 divisors (see below), whose sum is σ = 48832773696. Its totient is φ = 6119385600.

The previous prime is 18480558977. The next prime is 18480559021. The reversal of 18480559008 is 80095508481.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×18480559008² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 622941 + ... + 651932.

It is an arithmetic number, because the mean of its divisors is an integer number (1017349452).

Almost surely, 2^18480559008 is an apocalyptic number.

It is an amenable number.

18480559008 is an abundant number, since it is smaller than the sum of its proper divisors (30352214688).

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

18480559008 is a wasteful number, since it uses less digits than its factorization.

18480559008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1275037 (or 1275029 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 48.

The spelling of 18480559008 in words is "eighteen billion, four hundred eighty million, five hundred fifty-nine thousand, eight".