56688888899 has 2 divisors, whose sum is σ = 56688888900. Its totient is φ = 56688888898.

The previous prime is 56688888811. The next prime is 56688888901. The reversal of 56688888899 is 99888888665.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56688888899 is a prime.

Together with 56688888901, it forms a pair of twin primes.

It is a Chen prime.

It is a plaindrome in base 10.

It is not a weakly prime, because it can be changed into another prime (56688858899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28344444449 + 28344444450.

It is an arithmetic number, because the mean of its divisors is an integer number (28344444450).

Almost surely, 2^56688888899 is an apocalyptic number.

56688888899 is a deficient number, since it is larger than the sum of its proper divisors (1).

56688888899 is an equidigital number, since it uses as much as digits as its factorization.

56688888899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3822059520, while the sum is 83.

The spelling of 56688888899 in words is "fifty-six billion, six hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred ninety-nine".