204266522417 has 2 divisors, whose sum is σ = 204266522418. Its totient is φ = 204266522416.

The previous prime is 204266522407. The next prime is 204266522459. The reversal of 204266522417 is 714225662402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 103703964961 + 100562557456 = 322031^2 + 317116^2 .

It is a cyclic number.

It is not a de Polignac number, because 204266522417 - 2⁶ = 204266522353 is a prime.

It is not a weakly prime, because it can be changed into another prime (204266522407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102133261208 + 102133261209.

It is an arithmetic number, because the mean of its divisors is an integer number (102133261209).

Almost surely, 2^204266522417 is an apocalyptic number.

It is an amenable number.

204266522417 is a deficient number, since it is larger than the sum of its proper divisors (1).

204266522417 is an equidigital number, since it uses as much as digits as its factorization.

204266522417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 41.

The spelling of 204266522417 in words is "two hundred four billion, two hundred sixty-six million, five hundred twenty-two thousand, four hundred seventeen".