206663612061 has 8 divisors (see below), whose sum is σ = 284440240384. Its totient is φ = 133331362560.

The previous prime is 206663612033. The next prime is 206663612093. The reversal of 206663612061 is 160216366602.

206663612061 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 206663612061 - 2⁹ = 206663611549 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 (206663612261) 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, 1111094596 + ... + 1111094781.

It is an arithmetic number, because the mean of its divisors is an integer number (35555030048).

Almost surely, 2^206663612061 is an apocalyptic number.

It is an amenable number.

206663612061 is a deficient number, since it is larger than the sum of its proper divisors (77776628323).

206663612061 is a wasteful number, since it uses less digits than its factorization.

206663612061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2222189411.

The product of its (nonzero) digits is 93312, while the sum is 39.

Adding to 206663612061 its reverse (160216366602), we get a palindrome (366879978663).

The spelling of 206663612061 in words is "two hundred six billion, six hundred sixty-three million, six hundred twelve thousand, sixty-one".