205355798244 has 27 divisors (see below), whose sum is σ = 519100696387. Its totient is φ = 68451026424.

The previous prime is 205355798173. The next prime is 205355798251. The reversal of 205355798244 is 442897553502.

The square root of 205355798244 is 453162.

It is a perfect power (a square), and thus also a powerful number.

205355798244 is a `hidden beast` number, since 2 + 0 + 5 + 3 + 557 + 9 + 82 + 4 + 4 = 666.

205355798244 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Duffinian number.

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 8 ways as a sum of consecutive naturals, for example, 2681209 + ... + 2756735.

Almost surely, 2^205355798244 is an apocalyptic number.

205355798244 is the 453162-nd square number.

It is an amenable number.

205355798244 is an abundant number, since it is smaller than the sum of its proper divisors (313744898143).

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

205355798244 is an frugal number, since it uses more digits than its factorization.

205355798244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151064 (or 75532 counting only the distinct ones).

The product of its (nonzero) digits is 12096000, while the sum is 54.

The spelling of 205355798244 in words is "two hundred five billion, three hundred fifty-five million, seven hundred ninety-eight thousand, two hundred forty-four".