205689267113 has 16 divisors (see below), whose sum is σ = 231895403712. Its totient is φ = 180815040000.

The previous prime is 205689267107. The next prime is 205689267143. The reversal of 205689267113 is 311762986502.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 205689267113 - 2¹⁰ = 205689266089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (205689267143) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1967063 + ... + 2068988.

It is an arithmetic number, because the mean of its divisors is an integer number (14493462732).

Almost surely, 2^205689267113 is an apocalyptic number.

It is an amenable number.

205689267113 is a deficient number, since it is larger than the sum of its proper divisors (26206136599).

205689267113 is a wasteful number, since it uses less digits than its factorization.

205689267113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4036216.

The product of its (nonzero) digits is 1088640, while the sum is 50.

The spelling of 205689267113 in words is "two hundred five billion, six hundred eighty-nine million, two hundred sixty-seven thousand, one hundred thirteen".