4442521305618 has 128 divisors (see below), whose sum is σ = 11338124774400. Its totient is φ = 1275190905600.

The previous prime is 4442521305517. The next prime is 4442521305619. The reversal of 4442521305618 is 8165031252444.

4442521305618 is a `hidden beast` number, since 4 + 4 + 4 + 2 + 5 + 21 + 3 + 0 + 5 + 618 = 666.

It is not an unprimeable number, because it can be changed into a prime (4442521305619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 98763873 + ... + 98808843.

It is an arithmetic number, because the mean of its divisors is an integer number (88579099800).

Almost surely, 2^{4442521305618} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4442521305618, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5669062387200).

4442521305618 is an abundant number, since it is smaller than the sum of its proper divisors (6895603468782).

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

4442521305618 is a wasteful number, since it uses less digits than its factorization.

4442521305618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53765 (or 53759 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 45.

The spelling of 4442521305618 in words is "four trillion, four hundred forty-two billion, five hundred twenty-one million, three hundred five thousand, six hundred eighteen".