12394440263 has 2 divisors, whose sum is σ = 12394440264. Its totient is φ = 12394440262.

The previous prime is 12394440241. The next prime is 12394440277. The reversal of 12394440263 is 36204449321.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (36204449321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12394440263 - 2³⁰ = 11320698439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12394440463) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6197220131 + 6197220132.

It is an arithmetic number, because the mean of its divisors is an integer number (6197220132).

Almost surely, 2^12394440263 is an apocalyptic number.

12394440263 is a deficient number, since it is larger than the sum of its proper divisors (1).

12394440263 is an equidigital number, since it uses as much as digits as its factorization.

12394440263 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 38.

Adding to 12394440263 its reverse (36204449321), we get a palindrome (48598889584).

The spelling of 12394440263 in words is "twelve billion, three hundred ninety-four million, four hundred forty thousand, two hundred sixty-three".