12144228385 has 32 divisors (see below), whose sum is σ = 15562425600. Its totient is φ = 9071481600.

The previous prime is 12144228373. The next prime is 12144228403. The reversal of 12144228385 is 58382244121.

It is a happy number.

It is not a de Polignac number, because 12144228385 - 2²⁷ = 12010010657 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2194492 + ... + 2200018.

It is an arithmetic number, because the mean of its divisors is an integer number (486325800).

Almost surely, 2^12144228385 is an apocalyptic number.

It is an amenable number.

12144228385 is a deficient number, since it is larger than the sum of its proper divisors (3418197215).

12144228385 is a wasteful number, since it uses less digits than its factorization.

12144228385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5881.

The product of its digits is 122880, while the sum is 40.

The spelling of 12144228385 in words is "twelve billion, one hundred forty-four million, two hundred twenty-eight thousand, three hundred eighty-five".