566845666823 has 2 divisors, whose sum is σ = 566845666824. Its totient is φ = 566845666822.

The previous prime is 566845666813. The next prime is 566845666837. The reversal of 566845666823 is 328666548665.

566845666823 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 566845666823 - 2¹⁸ = 566845404679 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 566845666823.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (566845666813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283422833411 + 283422833412.

It is an arithmetic number, because the mean of its divisors is an integer number (283422833412).

Almost surely, 2^566845666823 is an apocalyptic number.

566845666823 is a deficient number, since it is larger than the sum of its proper divisors (1).

566845666823 is an equidigital number, since it uses as much as digits as its factorization.

566845666823 is an evil number, because the sum of its binary digits is even.

The product of its digits is 298598400, while the sum is 65.

The spelling of 566845666823 in words is "five hundred sixty-six billion, eight hundred forty-five million, six hundred sixty-six thousand, eight hundred twenty-three".