22534535509 has 2 divisors, whose sum is σ = 22534535510. Its totient is φ = 22534535508.

The previous prime is 22534535501. The next prime is 22534535519. The reversal of 22534535509 is 90553543522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22172699025 + 361836484 = 148905^2 + 19022^2 .

It is a cyclic number.

It is not a de Polignac number, because 22534535509 - 2³ = 22534535501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22534535501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11267267754 + 11267267755.

It is an arithmetic number, because the mean of its divisors is an integer number (11267267755).

Almost surely, 2^22534535509 is an apocalyptic number.

It is an amenable number.

22534535509 is a deficient number, since it is larger than the sum of its proper divisors (1).

22534535509 is an equidigital number, since it uses as much as digits as its factorization.

22534535509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 810000, while the sum is 43.

The spelling of 22534535509 in words is "twenty-two billion, five hundred thirty-four million, five hundred thirty-five thousand, five hundred nine".