79397706499 has 4 divisors (see below), whose sum is σ = 79517824720. Its totient is φ = 79277588280.

The previous prime is 79397706497. The next prime is 79397706517. The reversal of 79397706499 is 99460779397.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 79397706499 - 2¹ = 79397706497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (79397706497) 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 3 ways as a sum of consecutive naturals, for example, 60058119 + ... + 60059440.

It is an arithmetic number, because the mean of its divisors is an integer number (19879456180).

Almost surely, 2^79397706499 is an apocalyptic number.

79397706499 is a deficient number, since it is larger than the sum of its proper divisors (120118221).

79397706499 is a wasteful number, since it uses less digits than its factorization.

79397706499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120118220.

The product of its (nonzero) digits is 162030456, while the sum is 70.

The spelling of 79397706499 in words is "seventy-nine billion, three hundred ninety-seven million, seven hundred six thousand, four hundred ninety-nine".