204052512420613 has 4 divisors (see below), whose sum is σ = 204513127573248. Its totient is φ = 203591897267980.

The previous prime is 204052512420583. The next prime is 204052512420719. The reversal of 204052512420613 is 316024215250402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 204052512420613 - 2²¹ = 204052510323461 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 (204052582420613) 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 3 ways as a sum of consecutive naturals, for example, 230307575653 + ... + 230307576538.

It is an arithmetic number, because the mean of its divisors is an integer number (51128281893312).

Almost surely, 2^{204052512420613} is an apocalyptic number.

It is an amenable number.

204052512420613 is a deficient number, since it is larger than the sum of its proper divisors (460615152635).

204052512420613 is an equidigital number, since it uses as much as digits as its factorization.

204052512420613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460615152634.

The product of its (nonzero) digits is 115200, while the sum is 37.

The spelling of 204052512420613 in words is "two hundred four trillion, fifty-two billion, five hundred twelve million, four hundred twenty thousand, six hundred thirteen".