22449257291 has 2 divisors, whose sum is σ = 22449257292. Its totient is φ = 22449257290.

The previous prime is 22449257279. The next prime is 22449257323. The reversal of 22449257291 is 19275294422.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22449257291 - 2²⁶ = 22382148427 is a prime.

It is not a weakly prime, because it can be changed into another prime (22449251291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11224628645 + 11224628646.

It is an arithmetic number, because the mean of its divisors is an integer number (11224628646).

Almost surely, 2^22449257291 is an apocalyptic number.

22449257291 is a deficient number, since it is larger than the sum of its proper divisors (1).

22449257291 is an equidigital number, since it uses as much as digits as its factorization.

22449257291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 725760, while the sum is 47.

The spelling of 22449257291 in words is "twenty-two billion, four hundred forty-nine million, two hundred fifty-seven thousand, two hundred ninety-one".