8566656072241 has 2 divisors, whose sum is σ = 8566656072242. Its totient is φ = 8566656072240.

The previous prime is 8566656072229. The next prime is 8566656072307. The reversal of 8566656072241 is 1422706566658.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7505764312225 + 1060891760016 = 2739665^2 + 1029996^2 .

It is a cyclic number.

It is not a de Polignac number, because 8566656072241 - 2⁵ = 8566656072209 is a prime.

It is not a weakly prime, because it can be changed into another prime (8566656072941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4283328036120 + 4283328036121.

It is an arithmetic number, because the mean of its divisors is an integer number (4283328036121).

Almost surely, 2^{8566656072241} is an apocalyptic number.

It is an amenable number.

8566656072241 is a deficient number, since it is larger than the sum of its proper divisors (1).

8566656072241 is an equidigital number, since it uses as much as digits as its factorization.

8566656072241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29030400, while the sum is 58.

The spelling of 8566656072241 in words is "eight trillion, five hundred sixty-six billion, six hundred fifty-six million, seventy-two thousand, two hundred forty-one".