204705513113 has 8 divisors (see below), whose sum is σ = 216929308680. Its totient is φ = 192826049920.

The previous prime is 204705513101. The next prime is 204705513139. The reversal of 204705513113 is 311315507402.

It can be written as a sum of positive squares in 4 ways, for example, as 48768980569 + 155936532544 = 220837^2 + 394888^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204705513113 - 2⁸ = 204705512857 is a prime.

It is a super-2 number, since 2×204705513113² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204705513113.

It is not an unprimeable number, because it can be changed into a prime (204705513913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 86081870 + ... + 86084247.

It is an arithmetic number, because the mean of its divisors is an integer number (27116163585).

Almost surely, 2^204705513113 is an apocalyptic number.

It is an amenable number.

204705513113 is a deficient number, since it is larger than the sum of its proper divisors (12223795567).

204705513113 is a wasteful number, since it uses less digits than its factorization.

204705513113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172166187.

The product of its (nonzero) digits is 12600, while the sum is 32.

The spelling of 204705513113 in words is "two hundred four billion, seven hundred five million, five hundred thirteen thousand, one hundred thirteen".