56566657163 has 2 divisors, whose sum is σ = 56566657164. Its totient is φ = 56566657162.

The previous prime is 56566657109. The next prime is 56566657271. The reversal of 56566657163 is 36175666565.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56566657163 - 2⁶ = 56566657099 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56566657099 and 56566657108.

It is not a weakly prime, because it can be changed into another prime (56566677163) 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, 28283328581 + 28283328582.

It is an arithmetic number, because the mean of its divisors is an integer number (28283328582).

Almost surely, 2^56566657163 is an apocalyptic number.

56566657163 is a deficient number, since it is larger than the sum of its proper divisors (1).

56566657163 is an equidigital number, since it uses as much as digits as its factorization.

56566657163 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20412000, while the sum is 56.

The spelling of 56566657163 in words is "fifty-six billion, five hundred sixty-six million, six hundred fifty-seven thousand, one hundred sixty-three".