12911069243 has 4 divisors (see below), whose sum is σ = 12924020160. Its totient is φ = 12898118328.

The previous prime is 12911069231. The next prime is 12911069263. The reversal of 12911069243 is 34296011921.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12911069243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12911069197 and 12911069206.

It is not an unprimeable number, because it can be changed into a prime (12911069263) 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, 6473963 + ... + 6475956.

It is an arithmetic number, because the mean of its divisors is an integer number (3231005040).

Almost surely, 2^12911069243 is an apocalyptic number.

12911069243 is a deficient number, since it is larger than the sum of its proper divisors (12950917).

12911069243 is an equidigital number, since it uses as much as digits as its factorization.

12911069243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12950916.

The product of its (nonzero) digits is 23328, while the sum is 38.

The spelling of 12911069243 in words is "twelve billion, nine hundred eleven million, sixty-nine thousand, two hundred forty-three".