44398457568 has 144 divisors (see below), whose sum is σ = 128150830080. Its totient is φ = 14578507008.

The previous prime is 44398457563. The next prime is 44398457599. The reversal of 44398457568 is 86575489344.

44398457568 is a `hidden beast` number, since 4 + 43 + 98 + 457 + 56 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44398457561) 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 23 ways as a sum of consecutive naturals, for example, 11078221 + ... + 11082227.

It is an arithmetic number, because the mean of its divisors is an integer number (889936320).

Almost surely, 2^44398457568 is an apocalyptic number.

44398457568 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44398457568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64075415040).

44398457568 is an abundant number, since it is smaller than the sum of its proper divisors (83752372512).

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

44398457568 is a wasteful number, since it uses less digits than its factorization.

44398457568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4589 (or 4578 counting only the distinct ones).

The product of its digits is 116121600, while the sum is 63.

The spelling of 44398457568 in words is "forty-four billion, three hundred ninety-eight million, four hundred fifty-seven thousand, five hundred sixty-eight".