16004517665 has 8 divisors (see below), whose sum is σ = 20216232960. Its totient is φ = 12129739632.

The previous prime is 16004517623. The next prime is 16004517673. The reversal of 16004517665 is 56671540061.

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

It is a cyclic number.

It is not a de Polignac number, because 16004517665 - 2¹⁶ = 16004452129 is a prime.

It is a super-2 number, since 2×16004517665² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 84234209 + ... + 84234398.

It is an arithmetic number, because the mean of its divisors is an integer number (2527029120).

Almost surely, 2^16004517665 is an apocalyptic number.

It is an amenable number.

16004517665 is a deficient number, since it is larger than the sum of its proper divisors (4211715295).

16004517665 is a wasteful number, since it uses less digits than its factorization.

16004517665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168468631.

The product of its (nonzero) digits is 151200, while the sum is 41.

The spelling of 16004517665 in words is "sixteen billion, four million, five hundred seventeen thousand, six hundred sixty-five".