12443412404243 has 2 divisors, whose sum is σ = 12443412404244. Its totient is φ = 12443412404242.

The previous prime is 12443412404177. The next prime is 12443412404249. The reversal of 12443412404243 is 34240421434421.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12443412404243 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 12443412404197 and 12443412404206.

It is not a weakly prime, because it can be changed into another prime (12443412404249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6221706202121 + 6221706202122.

It is an arithmetic number, because the mean of its divisors is an integer number (6221706202122).

Almost surely, 2^{12443412404243} is an apocalyptic number.

12443412404243 is a deficient number, since it is larger than the sum of its proper divisors (1).

12443412404243 is an equidigital number, since it uses as much as digits as its factorization.

12443412404243 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 294912, while the sum is 38.

Adding to 12443412404243 its reverse (34240421434421), we get a palindrome (46683833838664).

The spelling of 12443412404243 in words is "twelve trillion, four hundred forty-three billion, four hundred twelve million, four hundred four thousand, two hundred forty-three".