205532521210 has 16 divisors (see below), whose sum is σ = 370761059592. Its totient is φ = 82034670400.

The previous prime is 205532521177. The next prime is 205532521231. The reversal of 205532521210 is 12125235502.

It can be written as a sum of positive squares in 4 ways, for example, as 130636704969 + 74895816241 = 361437^2 + 273671^2 .

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 22287421 + ... + 22296640.

Almost surely, 2^205532521210 is an apocalyptic number.

205532521210 is a deficient number, since it is larger than the sum of its proper divisors (165228538382).

205532521210 is a wasteful number, since it uses less digits than its factorization.

205532521210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44584529.

The product of its (nonzero) digits is 6000, while the sum is 28.

Adding to 205532521210 its reverse (12125235502), we get a palindrome (217657756712).

The spelling of 205532521210 in words is "two hundred five billion, five hundred thirty-two million, five hundred twenty-one thousand, two hundred ten".