16666694017 has 16 divisors (see below), whose sum is σ = 17102518272. Its totient is φ = 16234480080.

The previous prime is 16666693991. The next prime is 16666694027. The reversal of 16666694017 is 71049666661.

It is a cyclic number.

It is not a de Polignac number, because 16666694017 - 2³¹ = 14519210369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16666694027) 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, 11237758 + ... + 11239240.

It is an arithmetic number, because the mean of its divisors is an integer number (1068907392).

Almost surely, 2^16666694017 is an apocalyptic number.

It is an amenable number.

16666694017 is a deficient number, since it is larger than the sum of its proper divisors (435824255).

16666694017 is a wasteful number, since it uses less digits than its factorization.

16666694017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2508.

The product of its (nonzero) digits is 1959552, while the sum is 52.

The spelling of 16666694017 in words is "sixteen billion, six hundred sixty-six million, six hundred ninety-four thousand, seventeen".