565871138056669 has 2 divisors, whose sum is σ = 565871138056670. Its totient is φ = 565871138056668.

The previous prime is 565871138056607. The next prime is 565871138056709. The reversal of 565871138056669 is 966650831178565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 533719176183769 + 32151961872900 = 23102363^2 + 5670270^2 .

It is a cyclic number.

It is not a de Polignac number, because 565871138056669 - 2¹⁵ = 565871138023901 is a prime.

It is a super-2 number, since 2×565871138056669² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 565871138056595 and 565871138056604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (565871138056969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282935569028334 + 282935569028335.

It is an arithmetic number, because the mean of its divisors is an integer number (282935569028335).

Almost surely, 2^{565871138056669} is an apocalyptic number.

It is an amenable number.

565871138056669 is a deficient number, since it is larger than the sum of its proper divisors (1).

565871138056669 is an equidigital number, since it uses as much as digits as its factorization.

565871138056669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552000, while the sum is 76.

The spelling of 565871138056669 in words is "five hundred sixty-five trillion, eight hundred seventy-one billion, one hundred thirty-eight million, fifty-six thousand, six hundred sixty-nine".