12144233309 has 8 divisors (see below), whose sum is σ = 13134538872. Its totient is φ = 11161946880.

The previous prime is 12144233293. The next prime is 12144233327. The reversal of 12144233309 is 90333244121.

It can be written as a sum of positive squares in 4 ways, for example, as 61387225 + 12082846084 = 7835^2 + 109922^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12144233309 - 2⁴ = 12144233293 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12144233609) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2001632 + ... + 2007689.

It is an arithmetic number, because the mean of its divisors is an integer number (1641817359).

Almost surely, 2^12144233309 is an apocalyptic number.

It is an amenable number.

12144233309 is a deficient number, since it is larger than the sum of its proper divisors (990305563).

12144233309 is a wasteful number, since it uses less digits than its factorization.

12144233309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4009567.

The product of its (nonzero) digits is 15552, while the sum is 32.

The spelling of 12144233309 in words is "twelve billion, one hundred forty-four million, two hundred thirty-three thousand, three hundred nine".