12994632509 has 4 divisors (see below), whose sum is σ = 13002184860. Its totient is φ = 12987080160.

The previous prime is 12994632481. The next prime is 12994632527. The reversal of 12994632509 is 90523649921.

It is a happy number.

12994632509 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 8850105625 + 4144526884 = 94075^2 + 64378^2 .

It is a cyclic number.

It is not a de Polignac number, because 12994632509 - 2¹⁶ = 12994566973 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12994232509) 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, 3773594 + ... + 3777035.

It is an arithmetic number, because the mean of its divisors is an integer number (3250546215).

Almost surely, 2^12994632509 is an apocalyptic number.

It is an amenable number.

12994632509 is a deficient number, since it is larger than the sum of its proper divisors (7552351).

12994632509 is an equidigital number, since it uses as much as digits as its factorization.

12994632509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7552350.

The product of its (nonzero) digits is 1049760, while the sum is 50.

The spelling of 12994632509 in words is "twelve billion, nine hundred ninety-four million, six hundred thirty-two thousand, five hundred nine".