16603539108 has 24 divisors (see below), whose sum is σ = 41721714048. Its totient is φ = 5108781216.

The previous prime is 16603539097. The next prime is 16603539143. The reversal of 16603539108 is 80193530661.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 16603539108.

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, 53216316 + ... + 53216627.

It is an arithmetic number, because the mean of its divisors is an integer number (1738404752).

Almost surely, 2^16603539108 is an apocalyptic number.

It is an amenable number.

16603539108 is an abundant number, since it is smaller than the sum of its proper divisors (25118174940).

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

16603539108 is a wasteful number, since it uses less digits than its factorization.

16603539108 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106432963 (or 106432961 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 42.

The spelling of 16603539108 in words is "sixteen billion, six hundred three million, five hundred thirty-nine thousand, one hundred eight".