205306530259 has 2 divisors, whose sum is σ = 205306530260. Its totient is φ = 205306530258.

The previous prime is 205306530239. The next prime is 205306530301. The reversal of 205306530259 is 952035603502.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 205306530259 - 2²⁷ = 205172312531 is a prime.

It is not a weakly prime, because it can be changed into another prime (205306530229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102653265129 + 102653265130.

It is an arithmetic number, because the mean of its divisors is an integer number (102653265130).

Almost surely, 2^205306530259 is an apocalyptic number.

205306530259 is a deficient number, since it is larger than the sum of its proper divisors (1).

205306530259 is an equidigital number, since it uses as much as digits as its factorization.

205306530259 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 243000, while the sum is 40.

The spelling of 205306530259 in words is "two hundred five billion, three hundred six million, five hundred thirty thousand, two hundred fifty-nine".