205324221044413 has 4 divisors (see below), whose sum is σ = 205378353455548. Its totient is φ = 205270088633280.

The previous prime is 205324221044389. The next prime is 205324221044431. The reversal of 205324221044413 is 314440122423502.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 79646735948004 + 125677485096409 = 8924502^2 + 11210597^2 .

It is a cyclic number.

It is not a de Polignac number, because 205324221044413 - 2¹⁷ = 205324220913341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205324221044443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27066199878 + ... + 27066207463.

It is an arithmetic number, because the mean of its divisors is an integer number (51344588363887).

Almost surely, 2^{205324221044413} is an apocalyptic number.

It is an amenable number.

205324221044413 is a deficient number, since it is larger than the sum of its proper divisors (54132411135).

205324221044413 is an equidigital number, since it uses as much as digits as its factorization.

205324221044413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54132411134.

The product of its (nonzero) digits is 184320, while the sum is 37.

Adding to 205324221044413 its reverse (314440122423502), we get a palindrome (519764343467915).

The spelling of 205324221044413 in words is "two hundred five trillion, three hundred twenty-four billion, two hundred twenty-one million, forty-four thousand, four hundred thirteen".