56688888811 has 2 divisors, whose sum is σ = 56688888812. Its totient is φ = 56688888810.

The previous prime is 56688888769. The next prime is 56688888899. The reversal of 56688888811 is 11888888665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56688888811 - 2¹¹ = 56688886763 is a prime.

It is a super-2 number, since 2×56688888811² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (56688888611) 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, 28344444405 + 28344444406.

It is an arithmetic number, because the mean of its divisors is an integer number (28344444406).

Almost surely, 2^56688888811 is an apocalyptic number.

56688888811 is a deficient number, since it is larger than the sum of its proper divisors (1).

56688888811 is an equidigital number, since it uses as much as digits as its factorization.

56688888811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 47185920, while the sum is 67.

The spelling of 56688888811 in words is "fifty-six billion, six hundred eighty-eight million, eight hundred eighty-eight thousand, eight hundred eleven".