204124071165 has 32 divisors (see below), whose sum is σ = 373274777856. Its totient is φ = 93309027840.

The previous prime is 204124071149. The next prime is 204124071187. The reversal of 204124071165 is 561170421402.

It is not a de Polignac number, because 204124071165 - 2⁴ = 204124071149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2696979 + ... + 2771631.

It is an arithmetic number, because the mean of its divisors is an integer number (11664836808).

Almost surely, 2^204124071165 is an apocalyptic number.

It is an amenable number.

204124071165 is a deficient number, since it is larger than the sum of its proper divisors (169150706691).

204124071165 is a wasteful number, since it uses less digits than its factorization.

204124071165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100709.

The product of its (nonzero) digits is 13440, while the sum is 33.

Adding to 204124071165 its reverse (561170421402), we get a palindrome (765294492567).

The spelling of 204124071165 in words is "two hundred four billion, one hundred twenty-four million, seventy-one thousand, one hundred sixty-five".