79917982709 has 8 divisors (see below), whose sum is σ = 80437117440. Its totient is φ = 79398976176.

The previous prime is 79917982687. The next prime is 79917982789. The reversal of 79917982709 is 90728971997.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 79917982709 - 2²⁰ = 79916934133 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 (79917982789) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1435772 + ... + 1490394.

It is an arithmetic number, because the mean of its divisors is an integer number (10054639680).

Almost surely, 2^79917982709 is an apocalyptic number.

It is an amenable number.

79917982709 is a deficient number, since it is larger than the sum of its proper divisors (519134731).

79917982709 is a wasteful number, since it uses less digits than its factorization.

79917982709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64099.

The product of its (nonzero) digits is 36006768, while the sum is 68.

The spelling of 79917982709 in words is "seventy-nine billion, nine hundred seventeen million, nine hundred eighty-two thousand, seven hundred nine".