16603539149 has 8 divisors (see below), whose sum is σ = 16686452160. Its totient is φ = 16520666400.

The previous prime is 16603539143. The next prime is 16603539151. The reversal of 16603539149 is 94193530661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16603539149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16603539143) 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, 1138697 + ... + 1153185.

It is an arithmetic number, because the mean of its divisors is an integer number (2085806520).

Almost surely, 2^16603539149 is an apocalyptic number.

It is an amenable number.

16603539149 is a deficient number, since it is larger than the sum of its proper divisors (82913011).

16603539149 is a wasteful number, since it uses less digits than its factorization.

16603539149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20131.

The product of its (nonzero) digits is 524880, while the sum is 47.

The spelling of 16603539149 in words is "sixteen billion, six hundred three million, five hundred thirty-nine thousand, one hundred forty-nine".