566230820621209 has 2 divisors, whose sum is σ = 566230820621210. Its totient is φ = 566230820621208.

The previous prime is 566230820621173. The next prime is 566230820621273. The reversal of 566230820621209 is 902126028032665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 563768180902809 + 2462639718400 = 23743803^2 + 1569280^2 .

It is a cyclic number.

It is not a de Polignac number, because 566230820621209 - 2³³ = 566222230686617 is a prime.

It is not a weakly prime, because it can be changed into another prime (566230820621299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 283115410310604 + 283115410310605.

It is an arithmetic number, because the mean of its divisors is an integer number (283115410310605).

Almost surely, 2^{566230820621209} is an apocalyptic number.

It is an amenable number.

566230820621209 is a deficient number, since it is larger than the sum of its proper divisors (1).

566230820621209 is an equidigital number, since it uses as much as digits as its factorization.

566230820621209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3732480, while the sum is 52.

The spelling of 566230820621209 in words is "five hundred sixty-six trillion, two hundred thirty billion, eight hundred twenty million, six hundred twenty-one thousand, two hundred nine".