204115305061 has 2 divisors, whose sum is σ = 204115305062. Its totient is φ = 204115305060.

The previous prime is 204115305041. The next prime is 204115305083. The reversal of 204115305061 is 160503511402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 168125420961 + 35989884100 = 410031^2 + 189710^2 .

It is a cyclic number.

It is not a de Polignac number, because 204115305061 - 2¹⁷ = 204115173989 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204115305041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102057652530 + 102057652531.

It is an arithmetic number, because the mean of its divisors is an integer number (102057652531).

Almost surely, 2^204115305061 is an apocalyptic number.

It is an amenable number.

204115305061 is a deficient number, since it is larger than the sum of its proper divisors (1).

204115305061 is an equidigital number, since it uses as much as digits as its factorization.

204115305061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3600, while the sum is 28.

Adding to 204115305061 its reverse (160503511402), we get a palindrome (364618816463).

The spelling of 204115305061 in words is "two hundred four billion, one hundred fifteen million, three hundred five thousand, sixty-one".