79688831111111 has 2 divisors, whose sum is σ = 79688831111112. Its totient is φ = 79688831111110.

The previous prime is 79688831111063. The next prime is 79688831111117. The reversal of 79688831111111 is 11111113888697.

It is a strong prime.

It is an emirp because it is prime and its reverse (11111113888697) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 79688831111111 - 2¹⁰ = 79688831110087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (79688831111117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39844415555555 + 39844415555556.

It is an arithmetic number, because the mean of its divisors is an integer number (39844415555556).

Almost surely, 2^{79688831111111} is an apocalyptic number.

79688831111111 is a deficient number, since it is larger than the sum of its proper divisors (1).

79688831111111 is an equidigital number, since it uses as much as digits as its factorization.

79688831111111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 56.

The spelling of 79688831111111 in words is "seventy-nine trillion, six hundred eighty-eight billion, eight hundred thirty-one million, one hundred eleven thousand, one hundred eleven".