12080347261 has 4 divisors (see below), whose sum is σ = 12090274812. Its totient is φ = 12070419712.

The previous prime is 12080347249. The next prime is 12080347283. The reversal of 12080347261 is 16274308021.

12080347261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 3318451236 + 8761896025 = 57606^2 + 93605^2 .

It is a cyclic number.

It is not a de Polignac number, because 12080347261 - 2¹⁷ = 12080216189 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 (12080347241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4961950 + ... + 4964383.

It is an arithmetic number, because the mean of its divisors is an integer number (3022568703).

Almost surely, 2^12080347261 is an apocalyptic number.

It is an amenable number.

12080347261 is a deficient number, since it is larger than the sum of its proper divisors (9927551).

12080347261 is an equidigital number, since it uses as much as digits as its factorization.

12080347261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9927550.

The product of its (nonzero) digits is 16128, while the sum is 34.

The spelling of 12080347261 in words is "twelve billion, eighty million, three hundred forty-seven thousand, two hundred sixty-one".