22539945617 has 16 divisors (see below), whose sum is σ = 26343905280. Its totient is φ = 18883099728.

The previous prime is 22539945577. The next prime is 22539945641. The reversal of 22539945617 is 71654993522.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 22539945617 - 2¹⁴ = 22539929233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22539945017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 196778 + ... + 289484.

It is an arithmetic number, because the mean of its divisors is an integer number (1646494080).

Almost surely, 2^22539945617 is an apocalyptic number.

It is an amenable number.

22539945617 is a deficient number, since it is larger than the sum of its proper divisors (3803959663).

22539945617 is an equidigital number, since it uses as much as digits as its factorization.

22539945617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93500.

The product of its digits is 4082400, while the sum is 53.

The spelling of 22539945617 in words is "twenty-two billion, five hundred thirty-nine million, nine hundred forty-five thousand, six hundred seventeen".