206886842329 has 2 divisors, whose sum is σ = 206886842330. Its totient is φ = 206886842328.

The previous prime is 206886842299. The next prime is 206886842333. The reversal of 206886842329 is 923248688602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 191738894400 + 15147947929 = 437880^2 + 123077^2 .

It is a cyclic number.

It is not a de Polignac number, because 206886842329 - 2⁵ = 206886842297 is a prime.

It is a super-2 number, since 2×206886842329² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (206886842359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103443421164 + 103443421165.

It is an arithmetic number, because the mean of its divisors is an integer number (103443421165).

Almost surely, 2^206886842329 is an apocalyptic number.

It is an amenable number.

206886842329 is a deficient number, since it is larger than the sum of its proper divisors (1).

206886842329 is an equidigital number, since it uses as much as digits as its factorization.

206886842329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15925248, while the sum is 58.

The spelling of 206886842329 in words is "two hundred six billion, eight hundred eighty-six million, eight hundred forty-two thousand, three hundred twenty-nine".