12144443774 has 4 divisors (see below), whose sum is σ = 18216665664. Its totient is φ = 6072221886.

The previous prime is 12144443771. The next prime is 12144443789. The reversal of 12144443774 is 47734444121.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12144443771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3036110942 + ... + 3036110945.

It is an arithmetic number, because the mean of its divisors is an integer number (4554166416).

Almost surely, 2^12144443774 is an apocalyptic number.

12144443774 is a deficient number, since it is larger than the sum of its proper divisors (6072221890).

12144443774 is an equidigital number, since it uses as much as digits as its factorization.

12144443774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6072221889.

The product of its digits is 301056, while the sum is 41.

Adding to 12144443774 its reverse (47734444121), we get a palindrome (59878887895).

The spelling of 12144443774 in words is "twelve billion, one hundred forty-four million, four hundred forty-three thousand, seven hundred seventy-four".