45444539888 has 80 divisors (see below), whose sum is σ = 98757964800. Its totient is φ = 20080876800.

The previous prime is 45444539887. The next prime is 45444539923. The reversal of 45444539888 is 88893544454.

It is a self number, because there is not a number n which added to its sum of digits gives 45444539888.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45444539887) 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 15 ways as a sum of consecutive naturals, for example, 1214093 + ... + 1250963.

It is an arithmetic number, because the mean of its divisors is an integer number (1234474560).

Almost surely, 2^45444539888 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 45444539888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49378982400).

45444539888 is an abundant number, since it is smaller than the sum of its proper divisors (53313424912).

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

45444539888 is a wasteful number, since it uses less digits than its factorization.

45444539888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37086 (or 37080 counting only the distinct ones).

The product of its digits is 88473600, while the sum is 62.

The spelling of 45444539888 in words is "forty-five billion, four hundred forty-four million, five hundred thirty-nine thousand, eight hundred eighty-eight".