16005004161 has 16 divisors (see below), whose sum is σ = 22645656000. Its totient is φ = 10019975168.

The previous prime is 16005004159. The next prime is 16005004189. The reversal of 16005004161 is 16140050061.

It is not a de Polignac number, because 16005004161 - 2¹ = 16005004159 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16005004121) 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, 326571 + ... + 372368.

It is an arithmetic number, because the mean of its divisors is an integer number (1415353500).

Almost surely, 2^16005004161 is an apocalyptic number.

It is an amenable number.

16005004161 is a deficient number, since it is larger than the sum of its proper divisors (6640651839).

16005004161 is a wasteful number, since it uses less digits than its factorization.

16005004161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699408.

The product of its (nonzero) digits is 720, while the sum is 24.

The spelling of 16005004161 in words is "sixteen billion, five million, four thousand, one hundred sixty-one".