56563566427 has 2 divisors, whose sum is σ = 56563566428. Its totient is φ = 56563566426.

The previous prime is 56563566413. The next prime is 56563566463. The reversal of 56563566427 is 72466536565.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56563566427 is a prime.

It is not a weakly prime, because it can be changed into another prime (56563566407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28281783213 + 28281783214.

It is an arithmetic number, because the mean of its divisors is an integer number (28281783214).

Almost surely, 2^56563566427 is an apocalyptic number.

56563566427 is a deficient number, since it is larger than the sum of its proper divisors (1).

56563566427 is an equidigital number, since it uses as much as digits as its factorization.

56563566427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 27216000, while the sum is 55.

The spelling of 56563566427 in words is "fifty-six billion, five hundred sixty-three million, five hundred sixty-six thousand, four hundred twenty-seven".