565540145869 has 2 divisors, whose sum is σ = 565540145870. Its totient is φ = 565540145868.

The previous prime is 565540145843. The next prime is 565540145893. The reversal of 565540145869 is 968541045565.

565540145869 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., 492200464900 + 73339680969 = 701570^2 + 270813^2 .

It is a cyclic number.

It is not a de Polignac number, because 565540145869 - 2³⁷ = 428101192397 is a prime.

It is a super-2 number, since 2×565540145869² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (565540145899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282770072934 + 282770072935.

It is an arithmetic number, because the mean of its divisors is an integer number (282770072935).

Almost surely, 2^565540145869 is an apocalyptic number.

It is an amenable number.

565540145869 is a deficient number, since it is larger than the sum of its proper divisors (1).

565540145869 is an equidigital number, since it uses as much as digits as its factorization.

565540145869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920000, while the sum is 58.

The spelling of 565540145869 in words is "five hundred sixty-five billion, five hundred forty million, one hundred forty-five thousand, eight hundred sixty-nine".