444639944080 has 80 divisors (see below), whose sum is σ = 1101308886720. Its totient is φ = 166465027584.

The previous prime is 444639944057. The next prime is 444639944081. The reversal of 444639944080 is 80449936444.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (444639944081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1636047 + ... + 1888366.

It is an arithmetic number, because the mean of its divisors is an integer number (13766361084).

Almost surely, 2^444639944080 is an apocalyptic number.

444639944080 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

444639944080 is an abundant number, since it is smaller than the sum of its proper divisors (656668942640).

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

444639944080 is a wasteful number, since it uses less digits than its factorization.

444639944080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3524528 (or 3524522 counting only the distinct ones).

The product of its (nonzero) digits is 11943936, while the sum is 55.

The spelling of 444639944080 in words is "four hundred forty-four billion, six hundred thirty-nine million, nine hundred forty-four thousand, eighty".