205530111010 has 128 divisors (see below), whose sum is σ = 453729600000. Its totient is φ = 65428881408.

The previous prime is 205530110969. The next prime is 205530111043. The reversal of 205530111010 is 10111035502.

205530111010 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 52847146 + ... + 52851034.

It is an arithmetic number, because the mean of its divisors is an integer number (3544762500).

Almost surely, 2^205530111010 is an apocalyptic number.

205530111010 is an abundant number, since it is smaller than the sum of its proper divisors (248199488990).

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

205530111010 is a wasteful number, since it uses less digits than its factorization.

205530111010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4508.

The product of its (nonzero) digits is 150, while the sum is 19.

Adding to 205530111010 its reverse (10111035502), we get a palindrome (215641146512).

The spelling of 205530111010 in words is "two hundred five billion, five hundred thirty million, one hundred eleven thousand, ten".