22144724639 has 2 divisors, whose sum is σ = 22144724640. Its totient is φ = 22144724638.

The previous prime is 22144724611. The next prime is 22144724663. The reversal of 22144724639 is 93642744122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22144724639 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 22144724639.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22144724669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11072362319 + 11072362320.

It is an arithmetic number, because the mean of its divisors is an integer number (11072362320).

Almost surely, 2^22144724639 is an apocalyptic number.

22144724639 is a deficient number, since it is larger than the sum of its proper divisors (1).

22144724639 is an equidigital number, since it uses as much as digits as its factorization.

22144724639 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 44.

The spelling of 22144724639 in words is "twenty-two billion, one hundred forty-four million, seven hundred twenty-four thousand, six hundred thirty-nine".