565090965617 has 2 divisors, whose sum is σ = 565090965618. Its totient is φ = 565090965616.

The previous prime is 565090965601. The next prime is 565090965653. The reversal of 565090965617 is 716569090565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 561314125681 + 3776839936 = 749209^2 + 61456^2 .

It is a cyclic number.

It is not a de Polignac number, because 565090965617 - 2⁴ = 565090965601 is a prime.

It is not a weakly prime, because it can be changed into another prime (565090965667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282545482808 + 282545482809.

It is an arithmetic number, because the mean of its divisors is an integer number (282545482809).

Almost surely, 2^565090965617 is an apocalyptic number.

It is an amenable number.

565090965617 is a deficient number, since it is larger than the sum of its proper divisors (1).

565090965617 is an equidigital number, since it uses as much as digits as its factorization.

565090965617 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15309000, while the sum is 59.

The spelling of 565090965617 in words is "five hundred sixty-five billion, ninety million, nine hundred sixty-five thousand, six hundred seventeen".