206153102171 has 8 divisors (see below), whose sum is σ = 207795302400. Its totient is φ = 204511198248.

The previous prime is 206153102147. The next prime is 206153102219. The reversal of 206153102171 is 171201351602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206153102171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206153101171) 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, 1446680 + ... + 1582778.

It is an arithmetic number, because the mean of its divisors is an integer number (25974412800).

Almost surely, 2^206153102171 is an apocalyptic number.

206153102171 is a deficient number, since it is larger than the sum of its proper divisors (1642200229).

206153102171 is a wasteful number, since it uses less digits than its factorization.

206153102171 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148153.

The product of its (nonzero) digits is 2520, while the sum is 29.

Adding to 206153102171 its reverse (171201351602), we get a palindrome (377354453773).

The spelling of 206153102171 in words is "two hundred six billion, one hundred fifty-three million, one hundred two thousand, one hundred seventy-one".