79730493191 has 4 divisors (see below), whose sum is σ = 79736484672. Its totient is φ = 79724501712.

The previous prime is 79730493181. The next prime is 79730493217. The reversal of 79730493191 is 19139403797.

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 79730493191 - 2²² = 79726298887 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 (79730493181) 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, 2975735 + ... + 3002408.

It is an arithmetic number, because the mean of its divisors is an integer number (19934121168).

Almost surely, 2^79730493191 is an apocalyptic number.

79730493191 is a deficient number, since it is larger than the sum of its proper divisors (5991481).

79730493191 is a wasteful number, since it uses less digits than its factorization.

79730493191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5991480.

The product of its (nonzero) digits is 1285956, while the sum is 53.

The spelling of 79730493191 in words is "seventy-nine billion, seven hundred thirty million, four hundred ninety-three thousand, one hundred ninety-one".