16669643347 has 24 divisors (see below), whose sum is σ = 19886211072. Its totient is φ = 13924310400.

The previous prime is 16669643303. The next prime is 16669643351. The reversal of 16669643347 is 74334696661.

16669643347 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 16669643347 - 2⁷ = 16669643219 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16661643347) 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 23 ways as a sum of consecutive naturals, for example, 2031022 + ... + 2039212.

It is an arithmetic number, because the mean of its divisors is an integer number (828592128).

Almost surely, 2^16669643347 is an apocalyptic number.

16669643347 is a deficient number, since it is larger than the sum of its proper divisors (3216567725).

16669643347 is a wasteful number, since it uses less digits than its factorization.

16669643347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9259 (or 9252 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 55.

The spelling of 16669643347 in words is "sixteen billion, six hundred sixty-nine million, six hundred forty-three thousand, three hundred forty-seven".