22643538679 has 8 divisors (see below), whose sum is σ = 22783812480. Its totient is φ = 22503686496.

The previous prime is 22643538649. The next prime is 22643538727. The reversal of 22643538679 is 97683534622.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22643538679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22643538649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2682 + ... + 212824.

It is an arithmetic number, because the mean of its divisors is an integer number (2847976560).

Almost surely, 2^22643538679 is an apocalyptic number.

22643538679 is a deficient number, since it is larger than the sum of its proper divisors (140273801).

22643538679 is a wasteful number, since it uses less digits than its factorization.

22643538679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210809.

The product of its digits is 13063680, while the sum is 55.

The spelling of 22643538679 in words is "twenty-two billion, six hundred forty-three million, five hundred thirty-eight thousand, six hundred seventy-nine".