566496694666 has 16 divisors (see below), whose sum is σ = 990956318400. Its totient is φ = 242784297420.

The previous prime is 566496694663. The next prime is 566496694763. The reversal of 566496694666 is 666496694665.

It is a Smith number, since the sum of its digits (73) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (566496694663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 412897780 + ... + 412899151.

It is an arithmetic number, because the mean of its divisors is an integer number (61934769900).

Almost surely, 2^566496694666 is an apocalyptic number.

566496694666 is a deficient number, since it is larger than the sum of its proper divisors (424459623734).

566496694666 is an equidigital number, since it uses as much as digits as its factorization.

566496694666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 825796954 (or 825796940 counting only the distinct ones).

The product of its digits is 1813985280, while the sum is 73.

Subtracting 566496694666 from its reverse (666496694665), we obtain a palindrome (99999999999).

The spelling of 566496694666 in words is "five hundred sixty-six billion, four hundred ninety-six million, six hundred ninety-four thousand, six hundred sixty-six".