12080205317 has 4 divisors (see below), whose sum is σ = 12081088236. Its totient is φ = 12079322400.

The previous prime is 12080205299. The next prime is 12080205343. The reversal of 12080205317 is 71350208021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5631151681 + 6449053636 = 75041^2 + 80306^2 .

It is a cyclic number.

It is not a de Polignac number, because 12080205317 - 2²⁰ = 12079156741 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 12080205317.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12080205367) 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, 420608 + ... + 448409.

It is an arithmetic number, because the mean of its divisors is an integer number (3020272059).

Almost surely, 2^12080205317 is an apocalyptic number.

It is an amenable number.

12080205317 is a deficient number, since it is larger than the sum of its proper divisors (882919).

12080205317 is an equidigital number, since it uses as much as digits as its factorization.

12080205317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 882918.

The product of its (nonzero) digits is 3360, while the sum is 29.

The spelling of 12080205317 in words is "twelve billion, eighty million, two hundred five thousand, three hundred seventeen".