79768632779 has 24 divisors (see below), whose sum is σ = 89389182960. Its totient is φ = 71104679360.

The previous prime is 79768632773. The next prime is 79768632809. The reversal of 79768632779 is 97723686797.

It is not a de Polignac number, because 79768632779 - 2¹⁶ = 79768567243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (79768632773) 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 in 23 ways as a sum of consecutive naturals, for example, 14804924 + ... + 14810310.

It is an arithmetic number, because the mean of its divisors is an integer number (3724549290).

Almost surely, 2^79768632779 is an apocalyptic number.

79768632779 is a deficient number, since it is larger than the sum of its proper divisors (9620550181).

79768632779 is a wasteful number, since it uses less digits than its factorization.

79768632779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7771 (or 7760 counting only the distinct ones).

The product of its digits is 336063168, while the sum is 71.

The spelling of 79768632779 in words is "seventy-nine billion, seven hundred sixty-eight million, six hundred thirty-two thousand, seven hundred seventy-nine".