12443619313 has 2 divisors, whose sum is σ = 12443619314. Its totient is φ = 12443619312.

The previous prime is 12443619311. The next prime is 12443619323. The reversal of 12443619313 is 31391634421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11391719824 + 1051899489 = 106732^2 + 32433^2 .

It is a cyclic number.

It is not a de Polignac number, because 12443619313 - 2¹ = 12443619311 is a prime.

Together with 12443619311, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12443619311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6221809656 + 6221809657.

It is an arithmetic number, because the mean of its divisors is an integer number (6221809657).

Almost surely, 2^12443619313 is an apocalyptic number.

It is an amenable number.

12443619313 is a deficient number, since it is larger than the sum of its proper divisors (1).

12443619313 is an equidigital number, since it uses as much as digits as its factorization.

12443619313 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 37.

The spelling of 12443619313 in words is "twelve billion, four hundred forty-three million, six hundred nineteen thousand, three hundred thirteen".