22644975622721 has 2 divisors, whose sum is σ = 22644975622722. Its totient is φ = 22644975622720.

The previous prime is 22644975622667. The next prime is 22644975622747. The reversal of 22644975622721 is 12722657944622.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15276872542096 + 7368103080625 = 3908564^2 + 2714425^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22644975622721 is a prime.

It is not a weakly prime, because it can be changed into another prime (22644975625721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11322487811360 + 11322487811361.

It is an arithmetic number, because the mean of its divisors is an integer number (11322487811361).

Almost surely, 2^{22644975622721} is an apocalyptic number.

It is an amenable number.

22644975622721 is a deficient number, since it is larger than the sum of its proper divisors (1).

22644975622721 is an equidigital number, since it uses as much as digits as its factorization.

22644975622721 is an evil number, because the sum of its binary digits is even.

The product of its digits is 40642560, while the sum is 59.

The spelling of 22644975622721 in words is "twenty-two trillion, six hundred forty-four billion, nine hundred seventy-five million, six hundred twenty-two thousand, seven hundred twenty-one".