205287308201 has 2 divisors, whose sum is σ = 205287308202. Its totient is φ = 205287308200.

The previous prime is 205287308183. The next prime is 205287308209. The reversal of 205287308201 is 102803782502.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114700755625 + 90586552576 = 338675^2 + 300976^2 .

It is a cyclic number.

It is not a de Polignac number, because 205287308201 - 2¹⁴ = 205287291817 is a prime.

It is not a weakly prime, because it can be changed into another prime (205287308209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102643654100 + 102643654101.

It is an arithmetic number, because the mean of its divisors is an integer number (102643654101).

Almost surely, 2^205287308201 is an apocalyptic number.

It is an amenable number.

205287308201 is a deficient number, since it is larger than the sum of its proper divisors (1).

205287308201 is an equidigital number, since it uses as much as digits as its factorization.

205287308201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 53760, while the sum is 38.

The spelling of 205287308201 in words is "two hundred five billion, two hundred eighty-seven million, three hundred eight thousand, two hundred one".