22528591489 has 2 divisors, whose sum is σ = 22528591490. Its totient is φ = 22528591488.

The previous prime is 22528591469. The next prime is 22528591543. The reversal of 22528591489 is 98419582522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17313296400 + 5215295089 = 131580^2 + 72217^2 .

It is a cyclic number.

It is not a de Polignac number, because 22528591489 - 2⁵ = 22528591457 is a prime.

It is not a weakly prime, because it can be changed into another prime (22528591469) 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, 11264295744 + 11264295745.

It is an arithmetic number, because the mean of its divisors is an integer number (11264295745).

Almost surely, 2^22528591489 is an apocalyptic number.

It is an amenable number.

22528591489 is a deficient number, since it is larger than the sum of its proper divisors (1).

22528591489 is an equidigital number, since it uses as much as digits as its factorization.

22528591489 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4147200, while the sum is 55.

The spelling of 22528591489 in words is "twenty-two billion, five hundred twenty-eight million, five hundred ninety-one thousand, four hundred eighty-nine".