565871131056641 has 2 divisors, whose sum is σ = 565871131056642. Its totient is φ = 565871131056640.

The previous prime is 565871131056631. The next prime is 565871131056683. The reversal of 565871131056641 is 146650131178565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 537662243127025 + 28208887929616 = 23187545^2 + 5311204^2 .

It is a cyclic number.

It is not a de Polignac number, because 565871131056641 - 2²² = 565871126862337 is a prime.

It is not a weakly prime, because it can be changed into another prime (565871131056631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 282935565528320 + 282935565528321.

It is an arithmetic number, because the mean of its divisors is an integer number (282935565528321).

Almost surely, 2^{565871131056641} is an apocalyptic number.

It is an amenable number.

565871131056641 is a deficient number, since it is larger than the sum of its proper divisors (1).

565871131056641 is an equidigital number, since it uses as much as digits as its factorization.

565871131056641 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144000, while the sum is 59.

The spelling of 565871131056641 in words is "five hundred sixty-five trillion, eight hundred seventy-one billion, one hundred thirty-one million, fifty-six thousand, six hundred forty-one".