244440143440 has 40 divisors (see below), whose sum is σ = 573950316168. Its totient is φ = 96807974400.

The previous prime is 244440143417. The next prime is 244440143477. The reversal of 244440143440 is 44341044442.

It can be written as a sum of positive squares in 4 ways, for example, as 50720444944 + 193719698496 = 225212^2 + 440136^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 244440143396 and 244440143405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15118167 + ... + 15134326.

Almost surely, 2^244440143440 is an apocalyptic number.

244440143440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

244440143440 is an abundant number, since it is smaller than the sum of its proper divisors (329510172728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

244440143440 is a wasteful number, since it uses less digits than its factorization.

244440143440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30252607 (or 30252601 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 34.

Adding to 244440143440 its reverse (44341044442), we get a palindrome (288781187882).

The spelling of 244440143440 in words is "two hundred forty-four billion, four hundred forty million, one hundred forty-three thousand, four hundred forty".