22643126879 has 4 divisors (see below), whose sum is σ = 23124895584. Its totient is φ = 22161358176.

The previous prime is 22643126819. The next prime is 22643126887. The reversal of 22643126879 is 97862134622.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22643126879 is a prime.

It is a super-2 number, since 2×22643126879² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22643126819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 240884282 + ... + 240884375.

It is an arithmetic number, because the mean of its divisors is an integer number (5781223896).

Almost surely, 2^22643126879 is an apocalyptic number.

22643126879 is a deficient number, since it is larger than the sum of its proper divisors (481768705).

22643126879 is an equidigital number, since it uses as much as digits as its factorization.

22643126879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481768704.

The product of its digits is 1741824, while the sum is 50.

The spelling of 22643126879 in words is "twenty-two billion, six hundred forty-three million, one hundred twenty-six thousand, eight hundred seventy-nine".