22395985920 has 896 divisors, whose sum is σ = 99650580480. Its totient is φ = 4636016640.

The previous prime is 22395985901. The next prime is 22395985921. The reversal of 22395985920 is 2958959322.

22395985920 is a `hidden beast` number, since 2 + 23 + 9 + 598 + 5 + 9 + 20 = 666.

It is a tau number, because it is divible by the number of its divisors (896).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (22395985921) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 85155709 + ... + 85155971.

Almost surely, 2^22395985920 is an apocalyptic number.

22395985920 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 22395985920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49825290240).

22395985920 is an abundant number, since it is smaller than the sum of its proper divisors (77254594560).

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

22395985920 is a wasteful number, since it uses less digits than its factorization.

22395985920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 54.

The spelling of 22395985920 in words is "twenty-two billion, three hundred ninety-five million, nine hundred eighty-five thousand, nine hundred twenty".