568116611861 has 2 divisors, whose sum is σ = 568116611862. Its totient is φ = 568116611860.

The previous prime is 568116611857. The next prime is 568116611863. The reversal of 568116611861 is 168116611865.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 441818113636 + 126298498225 = 664694^2 + 355385^2 .

It is a cyclic number.

It is not a de Polignac number, because 568116611861 - 2² = 568116611857 is a prime.

Together with 568116611863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (568116611863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 284058305930 + 284058305931.

It is an arithmetic number, because the mean of its divisors is an integer number (284058305931).

Almost surely, 2^568116611861 is an apocalyptic number.

It is an amenable number.

568116611861 is a deficient number, since it is larger than the sum of its proper divisors (1).

568116611861 is an equidigital number, since it uses as much as digits as its factorization.

568116611861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 50.

The spelling of 568116611861 in words is "five hundred sixty-eight billion, one hundred sixteen million, six hundred eleven thousand, eight hundred sixty-one".