206147202173 has 8 divisors (see below), whose sum is σ = 227597350176. Its totient is φ = 185148636400.

The previous prime is 206147202161. The next prime is 206147202179. The reversal of 206147202173 is 371202741602.

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 206147202173 - 2²⁰ = 206146153597 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 (206147202179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 112894598 + ... + 112896423.

It is an arithmetic number, because the mean of its divisors is an integer number (28449668772).

Almost surely, 2^206147202173 is an apocalyptic number.

It is an amenable number.

206147202173 is a deficient number, since it is larger than the sum of its proper divisors (21450148003).

206147202173 is a wasteful number, since it uses less digits than its factorization.

206147202173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225791115.

The product of its (nonzero) digits is 28224, while the sum is 35.

Adding to 206147202173 its reverse (371202741602), we get a palindrome (577349943775).

The spelling of 206147202173 in words is "two hundred six billion, one hundred forty-seven million, two hundred two thousand, one hundred seventy-three".