206416634522305 has 16 divisors (see below), whose sum is σ = 247764592814544. Its totient is φ = 165090221660160.

The previous prime is 206416634522303. The next prime is 206416634522311. The reversal of 206416634522305 is 503225436614602.

It can be written as a sum of positive squares in 8 ways, for example, as 141088130689 + 206275546391616 = 375617^2 + 14362296^2 .

It is not a de Polignac number, because 206416634522305 - 2¹ = 206416634522303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206416634522303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1902455817 + ... + 1902564313.

It is an arithmetic number, because the mean of its divisors is an integer number (15485287050909).

Almost surely, 2^{206416634522305} is an apocalyptic number.

It is an amenable number.

206416634522305 is a deficient number, since it is larger than the sum of its proper divisors (41347958292239).

206416634522305 is a wasteful number, since it uses less digits than its factorization.

206416634522305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204276.

The product of its (nonzero) digits is 6220800, while the sum is 49.

The spelling of 206416634522305 in words is "two hundred six trillion, four hundred sixteen billion, six hundred thirty-four million, five hundred twenty-two thousand, three hundred five".