206516002005 has 16 divisors (see below), whose sum is σ = 367139559360. Its totient is φ = 110141867664.

The previous prime is 206516001973. The next prime is 206516002067. The reversal of 206516002005 is 500200615602.

206516002005 is a `hidden beast` number, since 2 + 0 + 6 + 51 + 600 + 2 + 0 + 0 + 5 = 666.

It is not a de Polignac number, because 206516002005 - 2⁵ = 206516001973 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 206516002005.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 764873947 + ... + 764874216.

It is an arithmetic number, because the mean of its divisors is an integer number (22946222460).

Almost surely, 2^206516002005 is an apocalyptic number.

It is an amenable number.

206516002005 is a deficient number, since it is larger than the sum of its proper divisors (160623557355).

206516002005 is a wasteful number, since it uses less digits than its factorization.

206516002005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529748177 (or 1529748171 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 206516002005 its reverse (500200615602), we get a palindrome (706716617607).

The spelling of 206516002005 in words is "two hundred six billion, five hundred sixteen million, two thousand, five".