204115305253 has 2 divisors, whose sum is σ = 204115305254. Its totient is φ = 204115305252.

The previous prime is 204115305197. The next prime is 204115305283. The reversal of 204115305253 is 352503511402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 187690832289 + 16424472964 = 433233^2 + 128158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204115305253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204115305283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102057652626 + 102057652627.

It is an arithmetic number, because the mean of its divisors is an integer number (102057652627).

Almost surely, 2^204115305253 is an apocalyptic number.

It is an amenable number.

204115305253 is a deficient number, since it is larger than the sum of its proper divisors (1).

204115305253 is an equidigital number, since it uses as much as digits as its factorization.

204115305253 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18000, while the sum is 31.

Adding to 204115305253 its reverse (352503511402), we get a palindrome (556618816655).

The spelling of 204115305253 in words is "two hundred four billion, one hundred fifteen million, three hundred five thousand, two hundred fifty-three".