22553155520 has 112 divisors (see below), whose sum is σ = 62629694400. Its totient is φ = 7732472832.

The previous prime is 22553155453. The next prime is 22553155529. The reversal of 22553155520 is 2555135522.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22553155529) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7022 + ... + 212498.

It is an arithmetic number, because the mean of its divisors is an integer number (559193700).

Almost surely, 2^22553155520 is an apocalyptic number.

22553155520 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 22553155520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31314847200).

22553155520 is an abundant number, since it is smaller than the sum of its proper divisors (40076538880).

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

22553155520 is an equidigital number, since it uses as much as digits as its factorization.

22553155520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205515 (or 205491 counting only the distinct ones).

The product of its (nonzero) digits is 75000, while the sum is 35.

The spelling of 22553155520 in words is "twenty-two billion, five hundred fifty-three million, one hundred fifty-five thousand, five hundred twenty".