565661166589 has 2 divisors, whose sum is σ = 565661166590. Its totient is φ = 565661166588.

The previous prime is 565661166557. The next prime is 565661166599. The reversal of 565661166589 is 985661166565.

565661166589 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 501629394564 + 64031772025 = 708258^2 + 253045^2 .

It is a cyclic number.

It is not a de Polignac number, because 565661166589 - 2⁵ = 565661166557 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 565661166589.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (565661166599) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282830583294 + 282830583295.

It is an arithmetic number, because the mean of its divisors is an integer number (282830583295).

Almost surely, 2^565661166589 is an apocalyptic number.

It is an amenable number.

565661166589 is a deficient number, since it is larger than the sum of its proper divisors (1).

565661166589 is an equidigital number, since it uses as much as digits as its factorization.

565661166589 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984000, while the sum is 64.

The spelling of 565661166589 in words is "five hundred sixty-five billion, six hundred sixty-one million, one hundred sixty-six thousand, five hundred eighty-nine".