444642640224 has 48 divisors (see below), whose sum is σ = 1186969775040. Its totient is φ = 145702106240.

The previous prime is 444642640219. The next prime is 444642640241. The reversal of 444642640224 is 422046246444.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

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, 39245982 + ... + 39257309.

It is an arithmetic number, because the mean of its divisors is an integer number (24728536980).

Almost surely, 2^444642640224 is an apocalyptic number.

It is an amenable number.

444642640224 is an abundant number, since it is smaller than the sum of its proper divisors (742327134816).

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

444642640224 is a wasteful number, since it uses less digits than its factorization.

444642640224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78503363 (or 78503355 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 42.

Adding to 444642640224 its reverse (422046246444), we get a palindrome (866688886668).

The spelling of 444642640224 in words is "four hundred forty-four billion, six hundred forty-two million, six hundred forty thousand, two hundred twenty-four".