12634355243 has 4 divisors (see below), whose sum is σ = 12903171360. Its totient is φ = 12365539128.

The previous prime is 12634355221. The next prime is 12634355291. The reversal of 12634355243 is 34255343621.

12634355243 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12634355243 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12634355197 and 12634355206.

It is not an unprimeable number, because it can be changed into a prime (12634355143) 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 in 3 ways as a sum of consecutive naturals, for example, 134407988 + ... + 134408081.

It is an arithmetic number, because the mean of its divisors is an integer number (3225792840).

Almost surely, 2^12634355243 is an apocalyptic number.

12634355243 is a deficient number, since it is larger than the sum of its proper divisors (268816117).

12634355243 is an equidigital number, since it uses as much as digits as its factorization.

12634355243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 268816116.

The product of its digits is 259200, while the sum is 38.

Adding to 12634355243 its reverse (34255343621), we get a palindrome (46889698864).

The spelling of 12634355243 in words is "twelve billion, six hundred thirty-four million, three hundred fifty-five thousand, two hundred forty-three".