16665085659 has 8 divisors (see below), whose sum is σ = 22278131712. Its totient is φ = 11081048360.

The previous prime is 16665085639. The next prime is 16665085681. The reversal of 16665085659 is 95658056661.

It is a happy number.

16665085659 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 16665085659 - 2⁷ = 16665085531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 16665085599 and 16665085608.

It is not an unprimeable number, because it can be changed into a prime (16665085639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7250847 + ... + 7253144.

It is an arithmetic number, because the mean of its divisors is an integer number (2784766464).

Almost surely, 2^16665085659 is an apocalyptic number.

16665085659 is a deficient number, since it is larger than the sum of its proper divisors (5613046053).

16665085659 is a wasteful number, since it uses less digits than its factorization.

16665085659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14504377.

The product of its (nonzero) digits is 11664000, while the sum is 57.

The spelling of 16665085659 in words is "sixteen billion, six hundred sixty-five million, eighty-five thousand, six hundred fifty-nine".