12632449391 has 2 divisors, whose sum is σ = 12632449392. Its totient is φ = 12632449390.

The previous prime is 12632449363. The next prime is 12632449463. The reversal of 12632449391 is 19394423621.

It is a weak prime.

It is an emirp because it is prime and its reverse (19394423621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12632449391 - 2¹⁸ = 12632187247 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12632448391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6316224695 + 6316224696.

It is an arithmetic number, because the mean of its divisors is an integer number (6316224696).

Almost surely, 2^12632449391 is an apocalyptic number.

12632449391 is a deficient number, since it is larger than the sum of its proper divisors (1).

12632449391 is an equidigital number, since it uses as much as digits as its factorization.

12632449391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 44.

The spelling of 12632449391 in words is "twelve billion, six hundred thirty-two million, four hundred forty-nine thousand, three hundred ninety-one".