22672644637 has 2 divisors, whose sum is σ = 22672644638. Its totient is φ = 22672644636.

The previous prime is 22672644583. The next prime is 22672644689. The reversal of 22672644637 is 73644627622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19732944676 + 2939699961 = 140474^2 + 54219^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22672644637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22672644037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11336322318 + 11336322319.

It is an arithmetic number, because the mean of its divisors is an integer number (11336322319).

Almost surely, 2^22672644637 is an apocalyptic number.

It is an amenable number.

22672644637 is a deficient number, since it is larger than the sum of its proper divisors (1).

22672644637 is an equidigital number, since it uses as much as digits as its factorization.

22672644637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4064256, while the sum is 49.

The spelling of 22672644637 in words is "twenty-two billion, six hundred seventy-two million, six hundred forty-four thousand, six hundred thirty-seven".