12711309617 has 4 divisors (see below), whose sum is σ = 12885437220. Its totient is φ = 12537182016.

The previous prime is 12711309601. The next prime is 12711309631. The reversal of 12711309617 is 71690311721.

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 3406006321 + 9305303296 = 58361^2 + 96464^2 .

It is a cyclic number.

It is not a de Polignac number, because 12711309617 - 2⁴ = 12711309601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12711309517) 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, 87063692 + ... + 87063837.

It is an arithmetic number, because the mean of its divisors is an integer number (3221359305).

Almost surely, 2^12711309617 is an apocalyptic number.

It is an amenable number.

12711309617 is a deficient number, since it is larger than the sum of its proper divisors (174127603).

12711309617 is an equidigital number, since it uses as much as digits as its factorization.

12711309617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174127602.

The product of its (nonzero) digits is 15876, while the sum is 38.

The spelling of 12711309617 in words is "twelve billion, seven hundred eleven million, three hundred nine thousand, six hundred seventeen".