18055874944 has 64 divisors (see below), whose sum is σ = 36828446400. Its totient is φ = 8813629440.

The previous prime is 18055874929. The next prime is 18055874951. The reversal of 18055874944 is 44947855081.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2529172 + ... + 2536300.

It is an arithmetic number, because the mean of its divisors is an integer number (575444475).

Almost surely, 2^18055874944 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18055874944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18414223200).

18055874944 is an abundant number, since it is smaller than the sum of its proper divisors (18772571456).

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

18055874944 is an equidigital number, since it uses as much as digits as its factorization.

18055874944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7611 (or 7599 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 55.

The spelling of 18055874944 in words is "eighteen billion, fifty-five million, eight hundred seventy-four thousand, nine hundred forty-four".