12080165309 has 4 divisors (see below), whose sum is σ = 12118273404. Its totient is φ = 12042057216.

The previous prime is 12080165239. The next prime is 12080165333. The reversal of 12080165309 is 90356108021.

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 2063158084 + 10017007225 = 45422^2 + 100085^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12080165309 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 (12080165359) 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, 19053572 + ... + 19054205.

It is an arithmetic number, because the mean of its divisors is an integer number (3029568351).

Almost surely, 2^12080165309 is an apocalyptic number.

It is an amenable number.

12080165309 is a deficient number, since it is larger than the sum of its proper divisors (38108095).

12080165309 is an equidigital number, since it uses as much as digits as its factorization.

12080165309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38108094.

The product of its (nonzero) digits is 12960, while the sum is 35.

The spelling of 12080165309 in words is "twelve billion, eighty million, one hundred sixty-five thousand, three hundred nine".