12343989943 has 2 divisors, whose sum is σ = 12343989944. Its totient is φ = 12343989942.

The previous prime is 12343989941. The next prime is 12343989953. The reversal of 12343989943 is 34998934321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12343989943 - 2¹ = 12343989941 is a prime.

Together with 12343989941, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12343989941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6171994971 + 6171994972.

It is an arithmetic number, because the mean of its divisors is an integer number (6171994972).

Almost surely, 2^12343989943 is an apocalyptic number.

12343989943 is a deficient number, since it is larger than the sum of its proper divisors (1).

12343989943 is an equidigital number, since it uses as much as digits as its factorization.

12343989943 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5038848, while the sum is 55.

The spelling of 12343989943 in words is "twelve billion, three hundred forty-three million, nine hundred eighty-nine thousand, nine hundred forty-three".