22573745737 has 2 divisors, whose sum is σ = 22573745738. Its totient is φ = 22573745736.

The previous prime is 22573745731. The next prime is 22573745791. The reversal of 22573745737 is 73754737522.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22558838416 + 14907321 = 150196^2 + 3861^2 .

It is a cyclic number.

It is not a de Polignac number, because 22573745737 - 2³ = 22573745729 is a prime.

It is not a weakly prime, because it can be changed into another prime (22573745731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11286872868 + 11286872869.

It is an arithmetic number, because the mean of its divisors is an integer number (11286872869).

Almost surely, 2^22573745737 is an apocalyptic number.

It is an amenable number.

22573745737 is a deficient number, since it is larger than the sum of its proper divisors (1).

22573745737 is an equidigital number, since it uses as much as digits as its factorization.

22573745737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8643600, while the sum is 52.

The spelling of 22573745737 in words is "twenty-two billion, five hundred seventy-three million, seven hundred forty-five thousand, seven hundred thirty-seven".