559917895661 has 2 divisors, whose sum is σ = 559917895662. Its totient is φ = 559917895660.

The previous prime is 559917895619. The next prime is 559917895687. The reversal of 559917895661 is 166598719955.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 535172718025 + 24745177636 = 731555^2 + 157306^2 .

It is a cyclic number.

It is not a de Polignac number, because 559917895661 - 2⁶ = 559917895597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (559917805661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 279958947830 + 279958947831.

It is an arithmetic number, because the mean of its divisors is an integer number (279958947831).

Almost surely, 2^559917895661 is an apocalyptic number.

It is an amenable number.

559917895661 is a deficient number, since it is larger than the sum of its proper divisors (1).

559917895661 is an equidigital number, since it uses as much as digits as its factorization.

559917895661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 183708000, while the sum is 71.

The spelling of 559917895661 in words is "five hundred fifty-nine billion, nine hundred seventeen million, eight hundred ninety-five thousand, six hundred sixty-one".