206644004466 has 8 divisors (see below), whose sum is σ = 413288008944. Its totient is φ = 68881334820.

The previous prime is 206644004447. The next prime is 206644004471. The reversal of 206644004466 is 664400446602.

It is a sphenic number, since it is the product of 3 distinct primes.

206644004466 is an admirable number.

It is an unprimeable number.

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, 17220333700 + ... + 17220333711.

It is an arithmetic number, because the mean of its divisors is an integer number (51661001118).

Almost surely, 2^206644004466 is an apocalyptic number.

206644004466 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

206644004466 is a wasteful number, since it uses less digits than its factorization.

206644004466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34440667416.

The product of its (nonzero) digits is 663552, while the sum is 42.

The spelling of 206644004466 in words is "two hundred six billion, six hundred forty-four million, four thousand, four hundred sixty-six".