22661195920 has 160 divisors (see below), whose sum is σ = 59883310080. Its totient is φ = 7900416000.

The previous prime is 22661195897. The next prime is 22661195927. The reversal of 22661195920 is 2959116622.

It is not an unprimeable number, because it can be changed into a prime (22661195927) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2969710 + ... + 2977330.

It is an arithmetic number, because the mean of its divisors is an integer number (374270688).

Almost surely, 2^22661195920 is an apocalyptic number.

22661195920 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 22661195920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29941655040).

22661195920 is an abundant number, since it is smaller than the sum of its proper divisors (37222114160).

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

22661195920 is a wasteful number, since it uses less digits than its factorization.

22661195920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7785 (or 7779 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 22661195920 in words is "twenty-two billion, six hundred sixty-one million, one hundred ninety-five thousand, nine hundred twenty".