12340564349 has 2 divisors, whose sum is σ = 12340564350. Its totient is φ = 12340564348.

The previous prime is 12340564343. The next prime is 12340564381. The reversal of 12340564349 is 94346504321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10402980025 + 1937584324 = 101995^2 + 44018^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12340564349 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12340564343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6170282174 + 6170282175.

It is an arithmetic number, because the mean of its divisors is an integer number (6170282175).

Almost surely, 2^12340564349 is an apocalyptic number.

It is an amenable number.

12340564349 is a deficient number, since it is larger than the sum of its proper divisors (1).

12340564349 is an equidigital number, since it uses as much as digits as its factorization.

12340564349 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 311040, while the sum is 41.

The spelling of 12340564349 in words is "twelve billion, three hundred forty million, five hundred sixty-four thousand, three hundred forty-nine".