12491848913 has 2 divisors, whose sum is σ = 12491848914. Its totient is φ = 12491848912.

The previous prime is 12491848907. The next prime is 12491849023. The reversal of 12491848913 is 31984819421.

It is a happy number.

12491848913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11223919249 + 1267929664 = 105943^2 + 35608^2 .

It is a cyclic number.

It is not a de Polignac number, because 12491848913 - 2⁸ = 12491848657 is a prime.

It is not a weakly prime, because it can be changed into another prime (12091848913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6245924456 + 6245924457.

It is an arithmetic number, because the mean of its divisors is an integer number (6245924457).

Almost surely, 2^12491848913 is an apocalyptic number.

It is an amenable number.

12491848913 is a deficient number, since it is larger than the sum of its proper divisors (1).

12491848913 is an equidigital number, since it uses as much as digits as its factorization.

12491848913 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 497664, while the sum is 50.

The spelling of 12491848913 in words is "twelve billion, four hundred ninety-one million, eight hundred forty-eight thousand, nine hundred thirteen".