22553221504 has 128 divisors (see below), whose sum is σ = 51278158080. Its totient is φ = 9780418560.

The previous prime is 22553221459. The next prime is 22553221541. The reversal of 22553221504 is 40512235522.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

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, 18231574 + ... + 18232810.

It is an arithmetic number, because the mean of its divisors is an integer number (400610610).

Almost surely, 2^22553221504 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 22553221504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25639079040).

22553221504 is an abundant number, since it is smaller than the sum of its proper divisors (28724936576).

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

22553221504 is a wasteful number, since it uses less digits than its factorization.

22553221504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1848 (or 1836 counting only the distinct ones).

The product of its (nonzero) digits is 24000, while the sum is 31.

The spelling of 22553221504 in words is "twenty-two billion, five hundred fifty-three million, two hundred twenty-one thousand, five hundred four".