56611278593 has 2 divisors, whose sum is σ = 56611278594. Its totient is φ = 56611278592.

The previous prime is 56611278571. The next prime is 56611278629. The reversal of 56611278593 is 39587211665.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33794571889 + 22816706704 = 183833^2 + 151052^2 .

It is a cyclic number.

It is not a de Polignac number, because 56611278593 - 2²⁴ = 56594501377 is a prime.

It is not a weakly prime, because it can be changed into another prime (56611278533) 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, 28305639296 + 28305639297.

It is an arithmetic number, because the mean of its divisors is an integer number (28305639297).

Almost surely, 2^56611278593 is an apocalyptic number.

It is an amenable number.

56611278593 is a deficient number, since it is larger than the sum of its proper divisors (1).

56611278593 is an equidigital number, since it uses as much as digits as its factorization.

56611278593 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 53.

The spelling of 56611278593 in words is "fifty-six billion, six hundred eleven million, two hundred seventy-eight thousand, five hundred ninety-three".