206220534020 has 12 divisors (see below), whose sum is σ = 433063121484. Its totient is φ = 82488213600.

The previous prime is 206220534007. The next prime is 206220534041. The reversal of 206220534020 is 20435022602.

It can be written as a sum of positive squares in 2 ways, for example, as 90991515904 + 115229018116 = 301648^2 + 339454^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5155513331 + ... + 5155513370.

It is an arithmetic number, because the mean of its divisors is an integer number (36088593457).

Almost surely, 2^206220534020 is an apocalyptic number.

206220534020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206220534020 is an abundant number, since it is smaller than the sum of its proper divisors (226842587464).

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

206220534020 is a wasteful number, since it uses less digits than its factorization.

206220534020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10311026710 (or 10311026708 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 206220534020 its reverse (20435022602), we get a palindrome (226655556622).

The spelling of 206220534020 in words is "two hundred six billion, two hundred twenty million, five hundred thirty-four thousand, twenty".