6448544044 has 24 divisors (see below), whose sum is σ = 11459877408. Its totient is φ = 3174420480.

The previous prime is 6448544021. The next prime is 6448544059. The reversal of 6448544044 is 4404458446.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 192684 + ... + 223660.

It is an arithmetic number, because the mean of its divisors is an integer number (477494892).

Almost surely, 2^6448544044 is an apocalyptic number.

It is an amenable number.

6448544044 is a deficient number, since it is larger than the sum of its proper divisors (5011333364).

6448544044 is a wasteful number, since it uses less digits than its factorization.

6448544044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31785 (or 31783 counting only the distinct ones).

The product of its (nonzero) digits is 983040, while the sum is 43.

The square root of 6448544044 is about 80302.8271233336. The cubic root of 6448544044 is about 1861.3179124606.

The spelling of 6448544044 in words is "six billion, four hundred forty-eight million, five hundred forty-four thousand, forty-four".