16066323009 has 81 divisors (see below), whose sum is σ = 26826335809. Its totient is φ = 9258039120.

The previous prime is 16066322989. The next prime is 16066323011. The reversal of 16066323009 is 90032366061.

The square root of 16066323009 is 126753.

It is a perfect power (a square), and thus also a powerful number.

16066323009 is a `hidden beast` number, since 16 + 0 + 6 + 632 + 3 + 0 + 0 + 9 = 666.

It is not a de Polignac number, because 16066323009 - 2⁵ = 16066322977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16066323709) by changing a digit.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 96205444 + ... + 96205610.

Almost surely, 2^16066323009 is an apocalyptic number.

16066323009 is the 126753-rd square number.

16066323009 is the 63377-th centered octagonal number.

It is an amenable number.

16066323009 is a deficient number, since it is larger than the sum of its proper divisors (10760012800).

16066323009 is a wasteful number, since it uses less digits than its factorization.

16066323009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408 (or 204 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 36.

Multiplying 16066323009 by its sum of digits (36), we get a square (578387628324 = 760518²).

The spelling of 16066323009 in words is "sixteen billion, sixty-six million, three hundred twenty-three thousand, nine".