22444690613 has 4 divisors (see below), whose sum is σ = 22760813088. Its totient is φ = 22128568140.

The previous prime is 22444690591. The next prime is 22444690643. The reversal of 22444690613 is 31609644422.

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 22444690613 - 2²⁰ = 22443642037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22444690643) 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, 158061131 + ... + 158061272.

It is an arithmetic number, because the mean of its divisors is an integer number (5690203272).

Almost surely, 2^22444690613 is an apocalyptic number.

It is an amenable number.

22444690613 is a deficient number, since it is larger than the sum of its proper divisors (316122475).

22444690613 is an equidigital number, since it uses as much as digits as its factorization.

22444690613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316122474.

The product of its (nonzero) digits is 248832, while the sum is 41.

The spelling of 22444690613 in words is "twenty-two billion, four hundred forty-four million, six hundred ninety thousand, six hundred thirteen".