79951843911 has 16 divisors (see below), whose sum is σ = 107025252224. Its totient is φ = 53090200224.

The previous prime is 79951843891. The next prime is 79951843919. The reversal of 79951843911 is 11934815997.

It is a happy number.

It is not a de Polignac number, because 79951843911 - 2⁹ = 79951843399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79951843919) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 835260 + ... + 926046.

It is an arithmetic number, because the mean of its divisors is an integer number (6689078264).

Almost surely, 2^79951843911 is an apocalyptic number.

79951843911 is a deficient number, since it is larger than the sum of its proper divisors (27073408313).

79951843911 is a wasteful number, since it uses less digits than its factorization.

79951843911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91950.

The product of its digits is 2449440, while the sum is 57.

The spelling of 79951843911 in words is "seventy-nine billion, nine hundred fifty-one million, eight hundred forty-three thousand, nine hundred eleven".