204440352133 has 4 divisors (see below), whose sum is σ = 204494255308. Its totient is φ = 204386448960.

The previous prime is 204440352131. The next prime is 204440352143. The reversal of 204440352133 is 331253044402.

It is a happy number.

204440352133 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 28873486084 + 175566866049 = 169922^2 + 419007^2 .

It is a cyclic number.

It is not a de Polignac number, because 204440352133 - 2¹ = 204440352131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204440352095 and 204440352104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204440352131) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 26945898 + ... + 26953483.

It is an arithmetic number, because the mean of its divisors is an integer number (51123563827).

Almost surely, 2^204440352133 is an apocalyptic number.

It is an amenable number.

204440352133 is a deficient number, since it is larger than the sum of its proper divisors (53903175).

204440352133 is an equidigital number, since it uses as much as digits as its factorization.

204440352133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53903174.

The product of its (nonzero) digits is 34560, while the sum is 31.

Adding to 204440352133 its reverse (331253044402), we get a palindrome (535693396535).

The spelling of 204440352133 in words is "two hundred four billion, four hundred forty million, three hundred fifty-two thousand, one hundred thirty-three".