22579641840 has 160 divisors (see below), whose sum is σ = 80189867520. Its totient is φ = 5148582912.

The previous prime is 22579641809. The next prime is 22579641869. The reversal of 22579641840 is 4814697522.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 22579641840.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 687882 + ... + 719958.

It is an arithmetic number, because the mean of its divisors is an integer number (501186672).

Almost surely, 2^22579641840 is an apocalyptic number.

22579641840 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 22579641840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40094933760).

22579641840 is an abundant number, since it is smaller than the sum of its proper divisors (57610225680).

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

22579641840 is a wasteful number, since it uses less digits than its factorization.

22579641840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32519 (or 32513 counting only the distinct ones).

The product of its (nonzero) digits is 967680, while the sum is 48.

The spelling of 22579641840 in words is "twenty-two billion, five hundred seventy-nine million, six hundred forty-one thousand, eight hundred forty".