12634583389 has 4 divisors (see below), whose sum is σ = 12764836924. Its totient is φ = 12504329856.

The previous prime is 12634583363. The next prime is 12634583407. The reversal of 12634583389 is 98338543621.

12634583389 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 can be written as a sum of positive squares in 2 ways, for example, as 9088380889 + 3546202500 = 95333^2 + 59550^2 .

It is a cyclic number.

It is not a de Polignac number, because 12634583389 - 2¹¹ = 12634581341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12634583309) 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, 65126622 + ... + 65126815.

It is an arithmetic number, because the mean of its divisors is an integer number (3191209231).

Almost surely, 2^12634583389 is an apocalyptic number.

It is an amenable number.

12634583389 is a deficient number, since it is larger than the sum of its proper divisors (130253535).

12634583389 is an equidigital number, since it uses as much as digits as its factorization.

12634583389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130253534.

The product of its digits is 3732480, while the sum is 52.

The spelling of 12634583389 in words is "twelve billion, six hundred thirty-four million, five hundred eighty-three thousand, three hundred eighty-nine".