2239772822657 has 2 divisors, whose sum is σ = 2239772822658. Its totient is φ = 2239772822656.

The previous prime is 2239772822621. The next prime is 2239772822669. The reversal of 2239772822657 is 7562282779322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1593575492161 + 646197330496 = 1262369^2 + 803864^2 .

It is a cyclic number.

It is not a de Polignac number, because 2239772822657 - 2²⁸ = 2239504387201 is a prime.

It is a super-2 number, since 2×2239772822657² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2239772822657.

It is not a weakly prime, because it can be changed into another prime (2239772822057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119886411328 + 1119886411329.

It is an arithmetic number, because the mean of its divisors is an integer number (1119886411329).

Almost surely, 2^{2239772822657} is an apocalyptic number.

It is an amenable number.

2239772822657 is a deficient number, since it is larger than the sum of its proper divisors (1).

2239772822657 is an equidigital number, since it uses as much as digits as its factorization.

2239772822657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 71124480, while the sum is 62.

The spelling of 2239772822657 in words is "two trillion, two hundred thirty-nine billion, seven hundred seventy-two million, eight hundred twenty-two thousand, six hundred fifty-seven".