16533107209 has 4 divisors (see below), whose sum is σ = 17066433280. Its totient is φ = 15999781140.

The previous prime is 16533107177. The next prime is 16533107219. The reversal of 16533107209 is 90270133561.

16533107209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 16533107209 - 2⁵ = 16533107177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16533107219) 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 3 ways as a sum of consecutive naturals, for example, 266662989 + ... + 266663050.

It is an arithmetic number, because the mean of its divisors is an integer number (4266608320).

Almost surely, 2^16533107209 is an apocalyptic number.

It is an amenable number.

16533107209 is a deficient number, since it is larger than the sum of its proper divisors (533326071).

16533107209 is an equidigital number, since it uses as much as digits as its factorization.

16533107209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 533326070.

The product of its (nonzero) digits is 34020, while the sum is 37.

The spelling of 16533107209 in words is "sixteen billion, five hundred thirty-three million, one hundred seven thousand, two hundred nine".