12381716443 has 2 divisors, whose sum is σ = 12381716444. Its totient is φ = 12381716442.

The previous prime is 12381716429. The next prime is 12381716509. The reversal of 12381716443 is 34461718321.

It is a weak prime.

It is an emirp because it is prime and its reverse (34461718321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12381716443 - 2⁵ = 12381716411 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12381716396 and 12381716405.

It is not a weakly prime, because it can be changed into another prime (12381716843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6190858221 + 6190858222.

It is an arithmetic number, because the mean of its divisors is an integer number (6190858222).

Almost surely, 2^12381716443 is an apocalyptic number.

12381716443 is a deficient number, since it is larger than the sum of its proper divisors (1).

12381716443 is an equidigital number, since it uses as much as digits as its factorization.

12381716443 is an evil number, because the sum of its binary digits is even.

The product of its digits is 96768, while the sum is 40.

The spelling of 12381716443 in words is "twelve billion, three hundred eighty-one million, seven hundred sixteen thousand, four hundred forty-three".