56565656593 has 2 divisors, whose sum is σ = 56565656594. Its totient is φ = 56565656592.

The previous prime is 56565656591. The next prime is 56565656633. The reversal of 56565656593 is 39565656565.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36692551809 + 19873104784 = 191553^2 + 140972^2 .

It is a cyclic number.

It is not a de Polignac number, because 56565656593 - 2¹ = 56565656591 is a prime.

Together with 56565656591, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56565656591) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28282828296 + 28282828297.

It is an arithmetic number, because the mean of its divisors is an integer number (28282828297).

Almost surely, 2^56565656593 is an apocalyptic number.

It is an amenable number.

56565656593 is a deficient number, since it is larger than the sum of its proper divisors (1).

56565656593 is an equidigital number, since it uses as much as digits as its factorization.

56565656593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 109350000, while the sum is 61.

The spelling of 56565656593 in words is "fifty-six billion, five hundred sixty-five million, six hundred fifty-six thousand, five hundred ninety-three".