6641444480 has 64 divisors (see below), whose sum is σ = 17320603680. Its totient is φ = 2415068160.

The previous prime is 6641444477. The next prime is 6641444539. The reversal of 6641444480 is 844441466.

It is a tau number, because it is divible by the number of its divisors (64).

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, 464654 + ... + 478733.

Almost surely, 2^6641444480 is an apocalyptic number.

It is an amenable number.

6641444480 is an abundant number, since it is smaller than the sum of its proper divisors (10679159200).

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

6641444480 is a wasteful number, since it uses less digits than its factorization.

6641444480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943417 (or 943405 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 41.

The square root of 6641444480 is about 81495.0580096732. The cubic root of 6641444480 is about 1879.6955595755.

The spelling of 6641444480 in words is "six billion, six hundred forty-one million, four hundred forty-four thousand, four hundred eighty".