16349185666 has 32 divisors (see below), whose sum is σ = 28289834496. Its totient is φ = 7016304000.

The previous prime is 16349185649. The next prime is 16349185669. The reversal of 16349185666 is 66658194361.

It is not an unprimeable number, because it can be changed into a prime (16349185669) 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, 264385 + ... + 320308.

It is an arithmetic number, because the mean of its divisors is an integer number (884057328).

Almost surely, 2^16349185666 is an apocalyptic number.

16349185666 is a deficient number, since it is larger than the sum of its proper divisors (11940648830).

16349185666 is a wasteful number, since it uses less digits than its factorization.

16349185666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584778.

The product of its digits is 5598720, while the sum is 55.

The spelling of 16349185666 in words is "sixteen billion, three hundred forty-nine million, one hundred eighty-five thousand, six hundred sixty-six".