12523201329 has 4 divisors (see below), whose sum is σ = 16697601776. Its totient is φ = 8348800884.

The previous prime is 12523201279. The next prime is 12523201343. The reversal of 12523201329 is 92310232521.

12523201329 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 12523201329 - 2⁹ = 12523200817 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12523201296 and 12523201305.

It is not an unprimeable number, because it can be changed into a prime (12523201429) 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, 2087200219 + ... + 2087200224.

It is an arithmetic number, because the mean of its divisors is an integer number (4174400444).

Almost surely, 2^12523201329 is an apocalyptic number.

It is an amenable number.

12523201329 is a deficient number, since it is larger than the sum of its proper divisors (4174400447).

12523201329 is an equidigital number, since it uses as much as digits as its factorization.

12523201329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4174400446.

The product of its (nonzero) digits is 6480, while the sum is 30.

The spelling of 12523201329 in words is "twelve billion, five hundred twenty-three million, two hundred one thousand, three hundred twenty-nine".