16686531066 has 32 divisors (see below), whose sum is σ = 34276271040. Its totient is φ = 5412605184.

The previous prime is 16686531061. The next prime is 16686531091. The reversal of 16686531066 is 66013568661.

It is a happy number.

16686531066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (16686531061) 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 15 ways as a sum of consecutive naturals, for example, 50815 + ... + 189618.

It is an arithmetic number, because the mean of its divisors is an integer number (1071133470).

Almost surely, 2^16686531066 is an apocalyptic number.

16686531066 is an abundant number, since it is smaller than the sum of its proper divisors (17589739974).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16686531066 is a wasteful number, since it uses less digits than its factorization.

16686531066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240750.

The product of its (nonzero) digits is 933120, while the sum is 48.

The spelling of 16686531066 in words is "sixteen billion, six hundred eighty-six million, five hundred thirty-one thousand, sixty-six".