22809588660 has 144 divisors (see below), whose sum is σ = 74226297600. Its totient is φ = 5872777344.

The previous prime is 22809588587. The next prime is 22809588661. The reversal of 22809588660 is 6688590822.

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

It is a junction number, because it is equal to n+sod(n) for n = 22809588597 and 22809588606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22809588661) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 60021 + ... + 221859.

It is an arithmetic number, because the mean of its divisors is an integer number (515460400).

Almost surely, 2^22809588660 is an apocalyptic number.

22809588660 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 22809588660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37113148800).

22809588660 is an abundant number, since it is smaller than the sum of its proper divisors (51416708940).

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

22809588660 is a wasteful number, since it uses less digits than its factorization.

22809588660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161892 (or 161878 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 54.

The spelling of 22809588660 in words is "twenty-two billion, eight hundred nine million, five hundred eighty-eight thousand, six hundred sixty".