16004321104 has 40 divisors (see below), whose sum is σ = 32415068160. Its totient is φ = 7640400768.

The previous prime is 16004321063. The next prime is 16004321117. The reversal of 16004321104 is 40112340061.

It is a super-2 number, since 2×16004321104² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165937 + ... + 244015.

It is an arithmetic number, because the mean of its divisors is an integer number (810376704).

Almost surely, 2^16004321104 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 16004321104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16207534080).

16004321104 is an abundant number, since it is smaller than the sum of its proper divisors (16410747056).

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

16004321104 is a wasteful number, since it uses less digits than its factorization.

16004321104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78667 (or 78661 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 16004321104 its reverse (40112340061), we get a palindrome (56116661165).

The spelling of 16004321104 in words is "sixteen billion, four million, three hundred twenty-one thousand, one hundred four".