79506171517 has 8 divisors (see below), whose sum is σ = 84519329760. Its totient is φ = 74575875600.

The previous prime is 79506171499. The next prime is 79506171527. The reversal of 79506171517 is 71517160597.

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 79506171517 - 2⁷ = 79506171389 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 (79506171527) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20713603 + ... + 20717440.

It is an arithmetic number, because the mean of its divisors is an integer number (10564916220).

Almost surely, 2^79506171517 is an apocalyptic number.

It is an amenable number.

79506171517 is a deficient number, since it is larger than the sum of its proper divisors (5013158243).

79506171517 is a wasteful number, since it uses less digits than its factorization.

79506171517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41431163.

The product of its (nonzero) digits is 463050, while the sum is 49.

The spelling of 79506171517 in words is "seventy-nine billion, five hundred six million, one hundred seventy-one thousand, five hundred seventeen".