79146664197 has 4 divisors (see below), whose sum is σ = 105528885600. Its totient is φ = 52764442796.

The previous prime is 79146664189. The next prime is 79146664273.

79146664197 is nontrivially palindromic in base 10.

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 79146664197 - 2³ = 79146664189 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 79146664197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (79146664187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13191110697 + ... + 13191110702.

It is an arithmetic number, because the mean of its divisors is an integer number (26382221400).

Almost surely, 2^79146664197 is an apocalyptic number.

It is an amenable number.

79146664197 is a deficient number, since it is larger than the sum of its proper divisors (26382221403).

79146664197 is a wasteful number, since it uses less digits than its factorization.

79146664197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26382221402.

The product of its digits is 13716864, while the sum is 60.

The spelling of 79146664197 in words is "seventy-nine billion, one hundred forty-six million, six hundred sixty-four thousand, one hundred ninety-seven".