22634525640491 has 2 divisors, whose sum is σ = 22634525640492. Its totient is φ = 22634525640490.

The previous prime is 22634525640479. The next prime is 22634525640497. The reversal of 22634525640491 is 19404652543622.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22634525640491 is a prime.

It is not a weakly prime, because it can be changed into another prime (22634525640497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11317262820245 + 11317262820246.

It is an arithmetic number, because the mean of its divisors is an integer number (11317262820246).

Almost surely, 2^{22634525640491} is an apocalyptic number.

22634525640491 is a deficient number, since it is larger than the sum of its proper divisors (1).

22634525640491 is an equidigital number, since it uses as much as digits as its factorization.

22634525640491 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12441600, while the sum is 53.

The spelling of 22634525640491 in words is "twenty-two trillion, six hundred thirty-four billion, five hundred twenty-five million, six hundred forty thousand, four hundred ninety-one".