22643427744 has 192 divisors, whose sum is σ = 75665882880. Its totient is φ = 6453457920.

The previous prime is 22643427701. The next prime is 22643427761. The reversal of 22643427744 is 44772434622.

It is a happy number.

22643427744 is a `hidden beast` number, since 2 + 264 + 342 + 7 + 7 + 44 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 22643427744.

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, 2541762 + ... + 2550654.

It is an arithmetic number, because the mean of its divisors is an integer number (394093140).

Almost surely, 2^22643427744 is an apocalyptic number.

22643427744 is a gapful number since it is divisible by the number (24) 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 22643427744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37832941440).

22643427744 is an abundant number, since it is smaller than the sum of its proper divisors (53022455136).

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

22643427744 is a wasteful number, since it uses less digits than its factorization.

22643427744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9340 (or 9326 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 45.

The spelling of 22643427744 in words is "twenty-two billion, six hundred forty-three million, four hundred twenty-seven thousand, seven hundred forty-four".