12347945969 has 2 divisors, whose sum is σ = 12347945970. Its totient is φ = 12347945968.

The previous prime is 12347945963. The next prime is 12347945983. The reversal of 12347945969 is 96954974321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11064515344 + 1283430625 = 105188^2 + 35825^2 .

It is an emirp because it is prime and its reverse (96954974321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12347945969 - 2²⁴ = 12331168753 is a prime.

It is a super-2 number, since 2×12347945969² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (12347945963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6173972984 + 6173972985.

It is an arithmetic number, because the mean of its divisors is an integer number (6173972985).

Almost surely, 2^12347945969 is an apocalyptic number.

It is an amenable number.

12347945969 is a deficient number, since it is larger than the sum of its proper divisors (1).

12347945969 is an equidigital number, since it uses as much as digits as its factorization.

12347945969 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14696640, while the sum is 59.

The spelling of 12347945969 in words is "twelve billion, three hundred forty-seven million, nine hundred forty-five thousand, nine hundred sixty-nine".