68836884811 has 2 divisors, whose sum is σ = 68836884812. Its totient is φ = 68836884810.

The previous prime is 68836884773. The next prime is 68836884817. The reversal of 68836884811 is 11848863886.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68836884811 - 2²³ = 68828496203 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68836884811.

It is not a weakly prime, because it can be changed into another prime (68836884817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34418442405 + 34418442406.

It is an arithmetic number, because the mean of its divisors is an integer number (34418442406).

Almost surely, 2^68836884811 is an apocalyptic number.

68836884811 is a deficient number, since it is larger than the sum of its proper divisors (1).

68836884811 is an equidigital number, since it uses as much as digits as its factorization.

68836884811 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14155776, while the sum is 61.

The spelling of 68836884811 in words is "sixty-eight billion, eight hundred thirty-six million, eight hundred eighty-four thousand, eight hundred eleven".