208240666206 has 8 divisors (see below), whose sum is σ = 416481332424. Its totient is φ = 69413555400.

The previous prime is 208240666157. The next prime is 208240666219. The reversal of 208240666206 is 602666042802.

It is a happy number.

208240666206 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

208240666206 is an admirable 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 3 ways as a sum of consecutive naturals, for example, 17353388845 + ... + 17353388856.

It is an arithmetic number, because the mean of its divisors is an integer number (52060166553).

Almost surely, 2^208240666206 is an apocalyptic number.

208240666206 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.

208240666206 is a wasteful number, since it uses less digits than its factorization.

208240666206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34706777706.

The product of its (nonzero) digits is 331776, while the sum is 42.

The spelling of 208240666206 in words is "two hundred eight billion, two hundred forty million, six hundred sixty-six thousand, two hundred six".