12634822237 has 4 divisors (see below), whose sum is σ = 12640104540. Its totient is φ = 12629539936.

The previous prime is 12634822223. The next prime is 12634822243. The reversal of 12634822237 is 73222843621.

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

It can be written as a sum of positive squares in 2 ways, for example, as 992628036 + 11642194201 = 31506^2 + 107899^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12634822237 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12634822237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12634822267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2637562 + ... + 2642347.

It is an arithmetic number, because the mean of its divisors is an integer number (3160026135).

Almost surely, 2^12634822237 is an apocalyptic number.

It is an amenable number.

12634822237 is a deficient number, since it is larger than the sum of its proper divisors (5282303).

12634822237 is an equidigital number, since it uses as much as digits as its factorization.

12634822237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5282302.

The product of its digits is 193536, while the sum is 40.

The spelling of 12634822237 in words is "twelve billion, six hundred thirty-four million, eight hundred twenty-two thousand, two hundred thirty-seven".