45544441728 has 64 divisors (see below), whose sum is σ = 121077590400. Its totient is φ = 15168910848.

The previous prime is 45544441727. The next prime is 45544441757. The reversal of 45544441728 is 82714444554.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45544441721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 421143 + ... + 518121.

It is an arithmetic number, because the mean of its divisors is an integer number (1891837350).

Almost surely, 2^45544441728 is an apocalyptic number.

45544441728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

45544441728 is an abundant number, since it is smaller than the sum of its proper divisors (75533148672).

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

45544441728 is a wasteful number, since it uses less digits than its factorization.

45544441728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98219 (or 98207 counting only the distinct ones).

The product of its digits is 2867200, while the sum is 48.

The spelling of 45544441728 in words is "forty-five billion, five hundred forty-four million, four hundred forty-one thousand, seven hundred twenty-eight".