22724744413 has 4 divisors (see below), whose sum is σ = 25971136480. Its totient is φ = 19478352348.

The previous prime is 22724744389. The next prime is 22724744417. The reversal of 22724744413 is 31444742722.

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 de Polignac number, because none of the positive numbers 2^k-22724744413 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 (22724744417) 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, 1623196023 + ... + 1623196036.

It is an arithmetic number, because the mean of its divisors is an integer number (6492784120).

Almost surely, 2^22724744413 is an apocalyptic number.

It is an amenable number.

22724744413 is a deficient number, since it is larger than the sum of its proper divisors (3246392067).

22724744413 is an equidigital number, since it uses as much as digits as its factorization.

22724744413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3246392066.

The product of its digits is 301056, while the sum is 40.

The spelling of 22724744413 in words is "twenty-two billion, seven hundred twenty-four million, seven hundred forty-four thousand, four hundred thirteen".