16485547728 has 160 divisors (see below), whose sum is σ = 47378217600. Its totient is φ = 4906579968.

The previous prime is 16485547721. The next prime is 16485547747. The reversal of 16485547728 is 82774558461.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16485547721) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4130758 + ... + 4134746.

It is an arithmetic number, because the mean of its divisors is an integer number (296113860).

Almost surely, 2^16485547728 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 16485547728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23689108800).

16485547728 is an abundant number, since it is smaller than the sum of its proper divisors (30892669872).

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

16485547728 is a wasteful number, since it uses less digits than its factorization.

16485547728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4229 (or 4223 counting only the distinct ones).

The product of its digits is 15052800, while the sum is 57.

The spelling of 16485547728 in words is "sixteen billion, four hundred eighty-five million, five hundred forty-seven thousand, seven hundred twenty-eight".