206066513605 has 8 divisors (see below), whose sum is σ = 258031112832. Its totient is φ = 157685679888.

The previous prime is 206066513581. The next prime is 206066513617. The reversal of 206066513605 is 506315660602.

It is a happy number.

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 206066513605 - 2¹⁹ = 206065989317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 895941249 + ... + 895941478.

It is an arithmetic number, because the mean of its divisors is an integer number (32253889104).

Almost surely, 2^206066513605 is an apocalyptic number.

It is an amenable number.

206066513605 is a deficient number, since it is larger than the sum of its proper divisors (51964599227).

206066513605 is a wasteful number, since it uses less digits than its factorization.

206066513605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1791882755.

The product of its (nonzero) digits is 194400, while the sum is 40.

The spelling of 206066513605 in words is "two hundred six billion, sixty-six million, five hundred thirteen thousand, six hundred five".