56566201243 has 2 divisors, whose sum is σ = 56566201244. Its totient is φ = 56566201242.

The previous prime is 56566201171. The next prime is 56566201247. The reversal of 56566201243 is 34210266565.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56566201243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56566201196 and 56566201205.

It is not a weakly prime, because it can be changed into another prime (56566201247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28283100621 + 28283100622.

It is an arithmetic number, because the mean of its divisors is an integer number (28283100622).

Almost surely, 2^56566201243 is an apocalyptic number.

56566201243 is a deficient number, since it is larger than the sum of its proper divisors (1).

56566201243 is an equidigital number, since it uses as much as digits as its factorization.

56566201243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 259200, while the sum is 40.

The spelling of 56566201243 in words is "fifty-six billion, five hundred sixty-six million, two hundred one thousand, two hundred forty-three".