204544444213 has 8 divisors (see below), whose sum is σ = 211678882200. Its totient is φ = 197415418368.

The previous prime is 204544444211. The next prime is 204544444219. The reversal of 204544444213 is 312444445402.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 33460458084 + 171083986129 = 182922^2 + 413623^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204544444213 - 2¹ = 204544444211 is a prime.

It is a super-5 number, since 5×204544444213⁵ (a number of 58 digits) contains 55555 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204544444211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1276056 + ... + 1427377.

It is an arithmetic number, because the mean of its divisors is an integer number (26459860275).

Almost surely, 2^204544444213 is an apocalyptic number.

It is an amenable number.

204544444213 is a deficient number, since it is larger than the sum of its proper divisors (7134437987).

204544444213 is a wasteful number, since it uses less digits than its factorization.

204544444213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2706071.

The product of its (nonzero) digits is 245760, while the sum is 37.

Adding to 204544444213 its reverse (312444445402), we get a palindrome (516988889615).

The spelling of 204544444213 in words is "two hundred four billion, five hundred forty-four million, four hundred forty-four thousand, two hundred thirteen".