18624418560 has 288 divisors, whose sum is σ = 72100546560. Its totient is φ = 4514918400.

The previous prime is 18624418543. The next prime is 18624418643. The reversal of 18624418560 is 6581442681.

It is a happy number.

18624418560 is a `hidden beast` number, since 1 + 8 + 624 + 4 + 18 + 5 + 6 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (288).

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 355665 + ... + 404655.

It is an arithmetic number, because the mean of its divisors is an integer number (250349120).

Almost surely, 2^18624418560 is an apocalyptic number.

18624418560 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 18624418560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36050273280).

18624418560 is an abundant number, since it is smaller than the sum of its proper divisors (53476128000).

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

18624418560 is a wasteful number, since it uses less digits than its factorization.

18624418560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49032 (or 49012 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 18624418560 in words is "eighteen billion, six hundred twenty-four million, four hundred eighteen thousand, five hundred sixty".