205116117 has 8 divisors (see below), whose sum is σ = 273673824. Its totient is φ = 136651248.

The previous prime is 205116113. The next prime is 205116127. The reversal of 205116117 is 711611502.

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

It is not a de Polignac number, because 205116117 - 2² = 205116113 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205116113) 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, 17878 + ... + 27015.

It is an arithmetic number, because the mean of its divisors is an integer number (34209228).

Almost surely, 2^205116117 is an apocalyptic number.

It is an amenable number.

205116117 is a deficient number, since it is larger than the sum of its proper divisors (68557707).

205116117 is a wasteful number, since it uses less digits than its factorization.

205116117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46419.

The product of its (nonzero) digits is 420, while the sum is 24.

The square root of 205116117 is about 14321.8754707615. The cubic root of 205116117 is about 589.7481612158.

Adding to 205116117 its reverse (711611502), we get a palindrome (916727619).

The spelling of 205116117 in words is "two hundred five million, one hundred sixteen thousand, one hundred seventeen".