206528851273 has 2 divisors, whose sum is σ = 206528851274. Its totient is φ = 206528851272.

The previous prime is 206528851271. The next prime is 206528851289. The reversal of 206528851273 is 372158825602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 187946526784 + 18582324489 = 433528^2 + 136317^2 .

It is a cyclic number.

It is not a de Polignac number, because 206528851273 - 2¹ = 206528851271 is a prime.

Together with 206528851271, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (206528851271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103264425636 + 103264425637.

It is an arithmetic number, because the mean of its divisors is an integer number (103264425637).

Almost surely, 2^206528851273 is an apocalyptic number.

It is an amenable number.

206528851273 is a deficient number, since it is larger than the sum of its proper divisors (1).

206528851273 is an equidigital number, since it uses as much as digits as its factorization.

206528851273 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1612800, while the sum is 49.

The spelling of 206528851273 in words is "two hundred six billion, five hundred twenty-eight million, eight hundred fifty-one thousand, two hundred seventy-three".