12680208113 has 4 divisors (see below), whose sum is σ = 12853909668. Its totient is φ = 12506506560.

The previous prime is 12680208109. The next prime is 12680208133. The reversal of 12680208113 is 31180208621.

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 6307059889 + 6373148224 = 79417^2 + 79832^2 .

It is a cyclic number.

It is not a de Polignac number, because 12680208113 - 2² = 12680208109 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 12680208113.

It is not an unprimeable number, because it can be changed into a prime (12680208133) 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, 86850668 + ... + 86850813.

It is an arithmetic number, because the mean of its divisors is an integer number (3213477417).

Almost surely, 2^12680208113 is an apocalyptic number.

It is an amenable number.

12680208113 is a deficient number, since it is larger than the sum of its proper divisors (173701555).

12680208113 is an equidigital number, since it uses as much as digits as its factorization.

12680208113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173701554.

The product of its (nonzero) digits is 4608, while the sum is 32.

The spelling of 12680208113 in words is "twelve billion, six hundred eighty million, two hundred eight thousand, one hundred thirteen".