22551055320 has 128 divisors (see below), whose sum is σ = 68146790400. Its totient is φ = 5969908224.

The previous prime is 22551055243. The next prime is 22551055337. The reversal of 22551055320 is 2355015522.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10983414 + ... + 10985466.

It is an arithmetic number, because the mean of its divisors is an integer number (532396800).

Almost surely, 2^22551055320 is an apocalyptic number.

22551055320 is a gapful number since it is divisible by the number (20) 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 22551055320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34073395200).

22551055320 is an abundant number, since it is smaller than the sum of its proper divisors (45595735080).

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

22551055320 is a wasteful number, since it uses less digits than its factorization.

22551055320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2689 (or 2685 counting only the distinct ones).

The product of its (nonzero) digits is 15000, while the sum is 30.

The spelling of 22551055320 in words is "twenty-two billion, five hundred fifty-one million, fifty-five thousand, three hundred twenty".