206442004166 has 8 divisors (see below), whose sum is σ = 309684040344. Its totient is φ = 103213990720.

The previous prime is 206442004157. The next prime is 206442004187. The reversal of 206442004166 is 661400244602.

206442004166 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 super-2 number, since 2×206442004166² (a number of 23 digits) contains 22 as substring.

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, 3468800 + ... + 3527811.

It is an arithmetic number, because the mean of its divisors is an integer number (38710505043).

Almost surely, 2^206442004166 is an apocalyptic number.

206442004166 is a deficient number, since it is larger than the sum of its proper divisors (103242036178).

206442004166 is a wasteful number, since it uses less digits than its factorization.

206442004166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7011366.

The product of its (nonzero) digits is 55296, while the sum is 35.

Adding to 206442004166 its reverse (661400244602), we get a palindrome (867842248768).

The spelling of 206442004166 in words is "two hundred six billion, four hundred forty-two million, four thousand, one hundred sixty-six".