6644444576844 has 48 divisors (see below), whose sum is σ = 15511957171200. Its totient is φ = 2213636122560.

The previous prime is 6644444576827. The next prime is 6644444576867. The reversal of 6644444576844 is 4486754444466.

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, 267919557 + ... + 267944355.

It is an arithmetic number, because the mean of its divisors is an integer number (323165774400).

Almost surely, 2^{6644444576844} is an apocalyptic number.

It is an amenable number.

6644444576844 is an abundant number, since it is smaller than the sum of its proper divisors (8867512594356).

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

6644444576844 is a wasteful number, since it uses less digits than its factorization.

6644444576844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35790 (or 35788 counting only the distinct ones).

The product of its digits is 990904320, while the sum is 66.

The spelling of 6644444576844 in words is "six trillion, six hundred forty-four billion, four hundred forty-four million, five hundred seventy-six thousand, eight hundred forty-four".