205022205050 has 24 divisors (see below), whose sum is σ = 410675248956. Its totient is φ = 75700506240.

The previous prime is 205022205043. The next prime is 205022205071. The reversal of 205022205050 is 50502220502.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 48092928601 + 156929276449 = 219301^2 + 396143^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 157708739 + ... + 157710038.

Almost surely, 2^205022205050 is an apocalyptic number.

205022205050 is an abundant number, since it is smaller than the sum of its proper divisors (205653043906).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205022205050 is a wasteful number, since it uses less digits than its factorization.

205022205050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315418802 (or 315418797 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

Adding to 205022205050 its reverse (50502220502), we get a palindrome (255524425552).

The spelling of 205022205050 in words is "two hundred five billion, twenty-two million, two hundred five thousand, fifty".