566418640769 has 2 divisors, whose sum is σ = 566418640770. Its totient is φ = 566418640768.

The previous prime is 566418640757. The next prime is 566418640789. The reversal of 566418640769 is 967046814665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 453720793744 + 112697847025 = 673588^2 + 335705^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-566418640769 is a prime.

It is a super-2 number, since 2×566418640769² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (566418640709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283209320384 + 283209320385.

It is an arithmetic number, because the mean of its divisors is an integer number (283209320385).

Almost surely, 2^566418640769 is an apocalyptic number.

It is an amenable number.

566418640769 is a deficient number, since it is larger than the sum of its proper divisors (1).

566418640769 is an equidigital number, since it uses as much as digits as its factorization.

566418640769 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 52254720, while the sum is 62.

The spelling of 566418640769 in words is "five hundred sixty-six billion, four hundred eighteen million, six hundred forty thousand, seven hundred sixty-nine".