206505060071 has 2 divisors, whose sum is σ = 206505060072. Its totient is φ = 206505060070.

The previous prime is 206505060061. The next prime is 206505060107. The reversal of 206505060071 is 170060505602.

It is a happy number.

Together with next prime (206505060107) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-206505060071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (206505060001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 103252530035 + 103252530036.

It is an arithmetic number, because the mean of its divisors is an integer number (103252530036).

Almost surely, 2^206505060071 is an apocalyptic number.

206505060071 is a deficient number, since it is larger than the sum of its proper divisors (1).

206505060071 is an equidigital number, since it uses as much as digits as its factorization.

206505060071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12600, while the sum is 32.

Adding to 206505060071 its reverse (170060505602), we get a palindrome (376565565673).

The spelling of 206505060071 in words is "two hundred six billion, five hundred five million, sixty thousand, seventy-one".