56656322249 has 2 divisors, whose sum is σ = 56656322250. Its totient is φ = 56656322248.

The previous prime is 56656322213. The next prime is 56656322251. The reversal of 56656322249 is 94222365665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50156737849 + 6499584400 = 223957^2 + 80620^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56656322249 is a prime.

It is a Sophie Germain prime.

Together with 56656322251, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 56656322197 and 56656322206.

It is not a weakly prime, because it can be changed into another prime (56656322209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28328161124 + 28328161125.

It is an arithmetic number, because the mean of its divisors is an integer number (28328161125).

Almost surely, 2^56656322249 is an apocalyptic number.

It is an amenable number.

56656322249 is a deficient number, since it is larger than the sum of its proper divisors (1).

56656322249 is an equidigital number, since it uses as much as digits as its factorization.

56656322249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4665600, while the sum is 50.

The spelling of 56656322249 in words is "fifty-six billion, six hundred fifty-six million, three hundred twenty-two thousand, two hundred forty-nine".