12406127444 has 18 divisors (see below), whose sum is σ = 22913535834. Its totient is φ = 5876586000.

The previous prime is 12406127443. The next prime is 12406127449. The reversal of 12406127444 is 44472160421.

It can be written as a sum of positive squares in only one way, i.e., 8498627344 + 3907500100 = 92188^2 + 62510^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12406127443) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4294307 + ... + 4297194.

It is an arithmetic number, because the mean of its divisors is an integer number (1272974213).

Almost surely, 2^12406127444 is an apocalyptic number.

It is an amenable number.

12406127444 is a deficient number, since it is larger than the sum of its proper divisors (10507408390).

12406127444 is a wasteful number, since it uses less digits than its factorization.

12406127444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8591543 (or 8591522 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 35.

Adding to 12406127444 its reverse (44472160421), we get a palindrome (56878287865).

The spelling of 12406127444 in words is "twelve billion, four hundred six million, one hundred twenty-seven thousand, four hundred forty-four".