2044400404240 has 20 divisors (see below), whose sum is σ = 4753230940044. Its totient is φ = 817760161664.

The previous prime is 2044400404201. The next prime is 2044400404381. The reversal of 2044400404240 is 424040044402.

It can be written as a sum of positive squares in 2 ways, for example, as 1081458564624 + 962941839616 = 1039932^2 + 981296^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 2044400404199 and 2044400404208.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12777502447 + ... + 12777502606.

Almost surely, 2^{2044400404240} is an apocalyptic number.

2044400404240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2044400404240 is an abundant number, since it is smaller than the sum of its proper divisors (2708830535804).

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

2044400404240 is a wasteful number, since it uses less digits than its factorization.

2044400404240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25555005066 (or 25555005060 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 28.

Adding to 2044400404240 its reverse (424040044402), we get a palindrome (2468440448642).

The spelling of 2044400404240 in words is "two trillion, forty-four billion, four hundred million, four hundred four thousand, two hundred forty".