56633559911 has 2 divisors, whose sum is σ = 56633559912. Its totient is φ = 56633559910.

The previous prime is 56633559887. The next prime is 56633559923. The reversal of 56633559911 is 11995533665.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56633559911 - 2³⁰ = 55559818087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56633559971) 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, 28316779955 + 28316779956.

It is an arithmetic number, because the mean of its divisors is an integer number (28316779956).

Almost surely, 2^56633559911 is an apocalyptic number.

56633559911 is a deficient number, since it is larger than the sum of its proper divisors (1).

56633559911 is an equidigital number, since it uses as much as digits as its factorization.

56633559911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3280500, while the sum is 53.

The spelling of 56633559911 in words is "fifty-six billion, six hundred thirty-three million, five hundred fifty-nine thousand, nine hundred eleven".