22657742491 has 2 divisors, whose sum is σ = 22657742492. Its totient is φ = 22657742490.

The previous prime is 22657742483. The next prime is 22657742507. The reversal of 22657742491 is 19424775622.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22657742491 - 2³ = 22657742483 is a prime.

It is not a weakly prime, because it can be changed into another prime (22657742441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11328871245 + 11328871246.

It is an arithmetic number, because the mean of its divisors is an integer number (11328871246).

Almost surely, 2^22657742491 is an apocalyptic number.

22657742491 is a deficient number, since it is larger than the sum of its proper divisors (1).

22657742491 is an equidigital number, since it uses as much as digits as its factorization.

22657742491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 49.

The spelling of 22657742491 in words is "twenty-two billion, six hundred fifty-seven million, seven hundred forty-two thousand, four hundred ninety-one".