2044400042440 has 64 divisors (see below), whose sum is σ = 5257229702400. Its totient is φ = 700910354688.

The previous prime is 2044400042431. The next prime is 2044400042453. The reversal of 2044400042440 is 442400044402.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 2044400042399 and 2044400042408.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8052966 + ... + 8302954.

It is an arithmetic number, because the mean of its divisors is an integer number (82144214100).

Almost surely, 2^{2044400042440} is an apocalyptic number.

2044400042440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2044400042440 is an abundant number, since it is smaller than the sum of its proper divisors (3212829659960).

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

2044400042440 is a wasteful number, since it uses less digits than its factorization.

2044400042440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279214 (or 279210 counting only the distinct ones).

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

Adding to 2044400042440 its reverse (442400044402), we get a palindrome (2486800086842).

The spelling of 2044400042440 in words is "two trillion, forty-four billion, four hundred million, forty-two thousand, four hundred forty".