22180521344 has 128 divisors (see below), whose sum is σ = 45897062400. Its totient is φ = 10672588800.

The previous prime is 22180521317. The next prime is 22180521373. The reversal of 22180521344 is 44312508122.

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

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a self number, because there is not a number n which added to its sum of digits gives 22180521344.

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, 116128289 + ... + 116128479.

It is an arithmetic number, because the mean of its divisors is an integer number (358570800).

Almost surely, 2^22180521344 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 22180521344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22948531200).

22180521344 is an abundant number, since it is smaller than the sum of its proper divisors (23716541056).

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

22180521344 is a wasteful number, since it uses less digits than its factorization.

22180521344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 512 (or 500 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 32.

The spelling of 22180521344 in words is "twenty-two billion, one hundred eighty million, five hundred twenty-one thousand, three hundred forty-four".