12404144045 has 16 divisors (see below), whose sum is σ = 15571278000. Its totient is φ = 9473468928.

The previous prime is 12404144041. The next prime is 12404144047. The reversal of 12404144045 is 54044140421.

It can be written as a sum of positive squares in 8 ways, for example, as 2621747209 + 9782396836 = 51203^2 + 98906^2 .

It is a cyclic number.

It is not a de Polignac number, because 12404144045 - 2² = 12404144041 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 12404143999 and 12404144017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12404144041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 467690 + ... + 493499.

It is an arithmetic number, because the mean of its divisors is an integer number (973204875).

Almost surely, 2^12404144045 is an apocalyptic number.

It is an amenable number.

12404144045 is a deficient number, since it is larger than the sum of its proper divisors (3167133955).

12404144045 is an equidigital number, since it uses as much as digits as its factorization.

12404144045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 961312.

The product of its (nonzero) digits is 10240, while the sum is 29.

Adding to 12404144045 its reverse (54044140421), we get a palindrome (66448284466).

The spelling of 12404144045 in words is "twelve billion, four hundred four million, one hundred forty-four thousand, forty-five".