22620646044257 has 2 divisors, whose sum is σ = 22620646044258. Its totient is φ = 22620646044256.

The previous prime is 22620646044247. The next prime is 22620646044263. The reversal of 22620646044257 is 75244064602622.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15372484442176 + 7248161602081 = 3920776^2 + 2692241^2 .

It is a cyclic number.

It is not a de Polignac number, because 22620646044257 - 2²⁰ = 22620644995681 is a prime.

It is not a weakly prime, because it can be changed into another prime (22620646044247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11310323022128 + 11310323022129.

It is an arithmetic number, because the mean of its divisors is an integer number (11310323022129).

Almost surely, 2^{22620646044257} is an apocalyptic number.

It is an amenable number.

22620646044257 is a deficient number, since it is larger than the sum of its proper divisors (1).

22620646044257 is an equidigital number, since it uses as much as digits as its factorization.

22620646044257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7741440, while the sum is 50.

The spelling of 22620646044257 in words is "twenty-two trillion, six hundred twenty billion, six hundred forty-six million, forty-four thousand, two hundred fifty-seven".