565871138023901 has 2 divisors, whose sum is σ = 565871138023902. Its totient is φ = 565871138023900.

The previous prime is 565871138023853. The next prime is 565871138023927. The reversal of 565871138023901 is 109320831178565.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 558661725072676 + 7209412951225 = 23636026^2 + 2685035^2 .

It is a cyclic number.

It is not a de Polignac number, because 565871138023901 - 2⁶ = 565871138023837 is a prime.

It is a super-2 number, since 2×565871138023901² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (565871138020901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282935569011950 + 282935569011951.

It is an arithmetic number, because the mean of its divisors is an integer number (282935569011951).

Almost surely, 2^{565871138023901} is an apocalyptic number.

It is an amenable number.

565871138023901 is a deficient number, since it is larger than the sum of its proper divisors (1).

565871138023901 is an equidigital number, since it uses as much as digits as its factorization.

565871138023901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10886400, while the sum is 59.

The spelling of 565871138023901 in words is "five hundred sixty-five trillion, eight hundred seventy-one billion, one hundred thirty-eight million, twenty-three thousand, nine hundred one".