16544043408 has 80 divisors (see below), whose sum is σ = 45306046656. Its totient is φ = 5184184320.

The previous prime is 16544043401. The next prime is 16544043419. The reversal of 16544043408 is 80434044561.

It is not an unprimeable number, because it can be changed into a prime (16544043401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 709048 + ... + 732008.

Almost surely, 2^16544043408 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 16544043408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22653023328).

16544043408 is an abundant number, since it is smaller than the sum of its proper divisors (28762003248).

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

16544043408 is a wasteful number, since it uses less digits than its factorization.

16544043408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23872 (or 23866 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 39.

Adding to 16544043408 its reverse (80434044561), we get a palindrome (96978087969).

The spelling of 16544043408 in words is "sixteen billion, five hundred forty-four million, forty-three thousand, four hundred eight".