16686416943 has 12 divisors (see below), whose sum is σ = 27545831248. Its totient is φ = 9535095360.

The previous prime is 16686416941. The next prime is 16686416951. The reversal of 16686416943 is 34961468661.

16686416943 is a `hidden beast` number, since 1 + 66 + 86 + 416 + 94 + 3 = 666.

16686416943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 16686416943 - 2¹ = 16686416941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 16686416943.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16686416941) 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 11 ways as a sum of consecutive naturals, for example, 132431818 + ... + 132431943.

Almost surely, 2^16686416943 is an apocalyptic number.

16686416943 is a deficient number, since it is larger than the sum of its proper divisors (10859414305).

16686416943 is a wasteful number, since it uses less digits than its factorization.

16686416943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264863774 (or 264863771 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 54.

The spelling of 16686416943 in words is "sixteen billion, six hundred eighty-six million, four hundred sixteen thousand, nine hundred forty-three".