206866208847 has 8 divisors (see below), whose sum is σ = 276007857840. Its totient is φ = 137817682880.

The previous prime is 206866208833. The next prime is 206866208851. The reversal of 206866208847 is 748802668602.

206866208847 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.

It is a cyclic number.

It is not a de Polignac number, because 206866208847 - 2¹⁵ = 206866176079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206866208897) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 23275572 + ... + 23284457.

It is an arithmetic number, because the mean of its divisors is an integer number (34500982230).

Almost surely, 2^206866208847 is an apocalyptic number.

206866208847 is a deficient number, since it is larger than the sum of its proper divisors (69141648993).

206866208847 is a wasteful number, since it uses less digits than its factorization.

206866208847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46561513.

The product of its (nonzero) digits is 12386304, while the sum is 57.

The spelling of 206866208847 in words is "two hundred six billion, eight hundred sixty-six million, two hundred eight thousand, eight hundred forty-seven".