18118528560 has 240 divisors, whose sum is σ = 66491556768. Its totient is φ = 4384972800.

The previous prime is 18118528543. The next prime is 18118528579. The reversal of 18118528560 is 6582581181.

18118528560 is a `hidden beast` number, since 1 + 8 + 1 + 1 + 85 + 2 + 8 + 560 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5803800 + ... + 5806920.

Almost surely, 2^18118528560 is an apocalyptic number.

18118528560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18118528560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33245778384).

18118528560 is an abundant number, since it is smaller than the sum of its proper divisors (48373028208).

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

18118528560 is a wasteful number, since it uses less digits than its factorization.

18118528560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3884 (or 3875 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 45.

The spelling of 18118528560 in words is "eighteen billion, one hundred eighteen million, five hundred twenty-eight thousand, five hundred sixty".