12631451957 has 2 divisors, whose sum is σ = 12631451958. Its totient is φ = 12631451956.

The previous prime is 12631451947. The next prime is 12631452007. The reversal of 12631451957 is 75915413621.

12631451957 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., 6759141796 + 5872310161 = 82214^2 + 76631^2 .

It is an emirp because it is prime and its reverse (75915413621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12631451957 - 2¹² = 12631447861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12631451927) 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, 6315725978 + 6315725979.

It is an arithmetic number, because the mean of its divisors is an integer number (6315725979).

Almost surely, 2^12631451957 is an apocalyptic number.

It is an amenable number.

12631451957 is a deficient number, since it is larger than the sum of its proper divisors (1).

12631451957 is an equidigital number, since it uses as much as digits as its factorization.

12631451957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 226800, while the sum is 44.

The spelling of 12631451957 in words is "twelve billion, six hundred thirty-one million, four hundred fifty-one thousand, nine hundred fifty-seven".