22644512268 has 24 divisors (see below), whose sum is σ = 60385366272. Its totient is φ = 6469860624.

The previous prime is 22644512249. The next prime is 22644512291. The reversal of 22644512268 is 86221544622.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134788680 + ... + 134788847.

It is an arithmetic number, because the mean of its divisors is an integer number (2516056928).

Almost surely, 2^22644512268 is an apocalyptic number.

22644512268 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

22644512268 is an abundant number, since it is smaller than the sum of its proper divisors (37740854004).

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

22644512268 is a wasteful number, since it uses less digits than its factorization.

22644512268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269577541 (or 269577539 counting only the distinct ones).

The product of its digits is 368640, while the sum is 42.

The spelling of 22644512268 in words is "twenty-two billion, six hundred forty-four million, five hundred twelve thousand, two hundred sixty-eight".