16990209966 has 32 divisors (see below), whose sum is σ = 34800974208. Its totient is φ = 5526874080.

The previous prime is 16990209937. The next prime is 16990209979. The reversal of 16990209966 is 66990209961.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 274000 + ... + 330236.

It is an arithmetic number, because the mean of its divisors is an integer number (1087530444).

Almost surely, 2^16990209966 is an apocalyptic number.

16990209966 is an abundant number, since it is smaller than the sum of its proper divisors (17810764242).

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

16990209966 is a wasteful number, since it uses less digits than its factorization.

16990209966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57456.

The product of its (nonzero) digits is 2834352, while the sum is 57.

The spelling of 16990209966 in words is "sixteen billion, nine hundred ninety million, two hundred nine thousand, nine hundred sixty-six".