2044620644440 has 64 divisors (see below), whose sum is σ = 5027789698560. Its totient is φ = 742139099520.

The previous prime is 2044620644413. The next prime is 2044620644461. The reversal of 2044620644440 is 444460264402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 2044620644393 and 2044620644402.

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 15 ways as a sum of consecutive naturals, for example, 4006912 + ... + 4488271.

It is an arithmetic number, because the mean of its divisors is an integer number (78559214040).

Almost surely, 2^{2044620644440} is an apocalyptic number.

2044620644440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2044620644440 is an abundant number, since it is smaller than the sum of its proper divisors (2983169054120).

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

2044620644440 is a wasteful number, since it uses less digits than its factorization.

2044620644440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8495752 (or 8495748 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 40.

The spelling of 2044620644440 in words is "two trillion, forty-four billion, six hundred twenty million, six hundred forty-four thousand, four hundred forty".