205082330261 has 2 divisors, whose sum is σ = 205082330262. Its totient is φ = 205082330260.

The previous prime is 205082330251. The next prime is 205082330281. The reversal of 205082330261 is 162033280502.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 191739770161 + 13342560100 = 437881^2 + 115510^2 .

It is a cyclic number.

It is not a de Polignac number, because 205082330261 - 2¹⁸ = 205082068117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (205082330251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102541165130 + 102541165131.

It is an arithmetic number, because the mean of its divisors is an integer number (102541165131).

Almost surely, 2^205082330261 is an apocalyptic number.

It is an amenable number.

205082330261 is a deficient number, since it is larger than the sum of its proper divisors (1).

205082330261 is an equidigital number, since it uses as much as digits as its factorization.

205082330261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 32.

The spelling of 205082330261 in words is "two hundred five billion, eighty-two million, three hundred thirty thousand, two hundred sixty-one".