12444442144 has 48 divisors (see below), whose sum is σ = 24674786136. Its totient is φ = 6177945600.

The previous prime is 12444442121. The next prime is 12444442147. The reversal of 12444442144 is 44124444421.

It can be written as a sum of positive squares in 4 ways, for example, as 9196810000 + 3247632144 = 95900^2 + 56988^2 .

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (12444442147) 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, 4753924 + ... + 4756540.

Almost surely, 2^12444442144 is an apocalyptic number.

It is an amenable number.

12444442144 is a deficient number, since it is larger than the sum of its proper divisors (12230343992).

12444442144 is a wasteful number, since it uses less digits than its factorization.

12444442144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3629 (or 3621 counting only the distinct ones).

The product of its digits is 65536, while the sum is 34.

Adding to 12444442144 its reverse (44124444421), we get a palindrome (56568886565).

The spelling of 12444442144 in words is "twelve billion, four hundred forty-four million, four hundred forty-two thousand, one hundred forty-four".