204113505213 has 6 divisors (see below), whose sum is σ = 294830618654. Its totient is φ = 136075670136.

The previous prime is 204113505203. The next prime is 204113505259. The reversal of 204113505213 is 312505311402.

204113505213 is a `hidden beast` number, since 2 + 0 + 4 + 1 + 135 + 0 + 521 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 203705990244 + 407514969 = 451338^2 + 20187^2 .

It is not a de Polignac number, because 204113505213 - 2¹⁴ = 204113488829 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 (204113505203) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 11339639170 + ... + 11339639187.

Almost surely, 2^204113505213 is an apocalyptic number.

It is an amenable number.

204113505213 is a deficient number, since it is larger than the sum of its proper divisors (90717113441).

204113505213 is a wasteful number, since it uses less digits than its factorization.

204113505213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22679278363 (or 22679278360 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

Adding to 204113505213 its reverse (312505311402), we get a palindrome (516618816615).

The spelling of 204113505213 in words is "two hundred four billion, one hundred thirteen million, five hundred five thousand, two hundred thirteen".