22536239309 has 4 divisors (see below), whose sum is σ = 22544679360. Its totient is φ = 22527799260.

The previous prime is 22536239303. The next prime is 22536239357. The reversal of 22536239309 is 90393263522.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 22536239309 - 2²⁸ = 22267803853 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 22536239309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22536239303) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4216019 + ... + 4221360.

It is an arithmetic number, because the mean of its divisors is an integer number (5636169840).

Almost surely, 2^22536239309 is an apocalyptic number.

It is an amenable number.

22536239309 is a deficient number, since it is larger than the sum of its proper divisors (8440051).

22536239309 is an equidigital number, since it uses as much as digits as its factorization.

22536239309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8440050.

The product of its (nonzero) digits is 524880, while the sum is 44.

The spelling of 22536239309 in words is "twenty-two billion, five hundred thirty-six million, two hundred thirty-nine thousand, three hundred nine".