404145224144 has 30 divisors (see below), whose sum is σ = 792579364866. Its totient is φ = 199637947840.

The previous prime is 404145224141. The next prime is 404145224159. The reversal of 404145224144 is 441422541404.

It can be written as a sum of positive squares in only one way, i.e., 383383872400 + 20761351744 = 619180^2 + 144088^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404145224141) 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, 1723067 + ... + 1943514.

Almost surely, 2^404145224144 is an apocalyptic number.

It is an amenable number.

404145224144 is a deficient number, since it is larger than the sum of its proper divisors (388434140722).

404145224144 is an equidigital number, since it uses as much as digits as its factorization.

404145224144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3666755 (or 3666666 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 35.

Adding to 404145224144 its reverse (441422541404), we get a palindrome (845567765548).

The spelling of 404145224144 in words is "four hundred four billion, one hundred forty-five million, two hundred twenty-four thousand, one hundred forty-four".