206849668039 has 8 divisors (see below), whose sum is σ = 236430419328. Its totient is φ = 177276616440.

The previous prime is 206849668037. The next prime is 206849668063. The reversal of 206849668039 is 930866948602.

206849668039 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 not a de Polignac number, because 206849668039 - 2¹ = 206849668037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206849668037) 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, 1867237 + ... + 1974910.

It is an arithmetic number, because the mean of its divisors is an integer number (29553802416).

Almost surely, 2^206849668039 is an apocalyptic number.

206849668039 is a deficient number, since it is larger than the sum of its proper divisors (29580751289).

206849668039 is an equidigital number, since it uses as much as digits as its factorization.

206849668039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3849845.

The product of its (nonzero) digits is 26873856, while the sum is 61.

The spelling of 206849668039 in words is "two hundred six billion, eight hundred forty-nine million, six hundred sixty-eight thousand, thirty-nine".