205113130452 has 18 divisors (see below), whose sum is σ = 518480413178. Its totient is φ = 68371043472.

The previous prime is 205113130441. The next prime is 205113130457. The reversal of 205113130452 is 254031311502.

205113130452 is a `hidden beast` number, since 2 + 0 + 51 + 131 + 30 + 452 = 666.

It can be written as a sum of positive squares in only one way, i.e., 183290159376 + 21822971076 = 428124^2 + 147726^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205113130457) 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, 2848793443 + ... + 2848793514.

Almost surely, 2^205113130452 is an apocalyptic number.

It is an amenable number.

205113130452 is an abundant number, since it is smaller than the sum of its proper divisors (313367282726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205113130452 is a wasteful number, since it uses less digits than its factorization.

205113130452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5697586967 (or 5697586962 counting only the distinct ones).

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

Adding to 205113130452 its reverse (254031311502), we get a palindrome (459144441954).

The spelling of 205113130452 in words is "two hundred five billion, one hundred thirteen million, one hundred thirty thousand, four hundred fifty-two".