79387373717 has 4 divisors (see below), whose sum is σ = 79403811456. Its totient is φ = 79370935980.

The previous prime is 79387373693. The next prime is 79387373731. The reversal of 79387373717 is 71737378397.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 79387373717 - 2¹⁰ = 79387372693 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 79387373717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79387373017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8211623 + ... + 8221284.

It is an arithmetic number, because the mean of its divisors is an integer number (19850952864).

Almost surely, 2^79387373717 is an apocalyptic number.

It is an amenable number.

79387373717 is a deficient number, since it is larger than the sum of its proper divisors (16437739).

79387373717 is a wasteful number, since it uses less digits than its factorization.

79387373717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16437738.

The product of its digits is 32672808, while the sum is 62.

The spelling of 79387373717 in words is "seventy-nine billion, three hundred eighty-seven million, three hundred seventy-three thousand, seven hundred seventeen".