22755665920 has 192 divisors, whose sum is σ = 59164560000. Its totient is φ = 8350138368.

The previous prime is 22755665903. The next prime is 22755665921. The reversal of 22755665920 is 2956655722.

It is not an unprimeable number, because it can be changed into a prime (22755665921) 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, 26490451 + ... + 26491309.

It is an arithmetic number, because the mean of its divisors is an integer number (308148750).

Almost surely, 2^22755665920 is an apocalyptic number.

22755665920 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 22755665920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29582280000).

22755665920 is an abundant number, since it is smaller than the sum of its proper divisors (36408894080).

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

22755665920 is a wasteful number, since it uses less digits than its factorization.

22755665920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1098 (or 1078 counting only the distinct ones).

The product of its (nonzero) digits is 2268000, while the sum is 49.

The spelling of 22755665920 in words is "twenty-two billion, seven hundred fifty-five million, six hundred sixty-five thousand, nine hundred twenty".