204523342721 has 8 divisors (see below), whose sum is σ = 216931149600. Its totient is φ = 192279877920.

The previous prime is 204523342717. The next prime is 204523342741. The reversal of 204523342721 is 127243325402.

204523342721 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 204523342721 - 2² = 204523342717 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204523342741) 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 7 ways as a sum of consecutive naturals, for example, 41082956 + ... + 41087933.

It is an arithmetic number, because the mean of its divisors is an integer number (27116393700).

Almost surely, 2^204523342721 is an apocalyptic number.

It is an amenable number.

204523342721 is a deficient number, since it is larger than the sum of its proper divisors (12407806879).

204523342721 is a wasteful number, since it uses less digits than its factorization.

204523342721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82171039.

The product of its (nonzero) digits is 80640, while the sum is 35.

The spelling of 204523342721 in words is "two hundred four billion, five hundred twenty-three million, three hundred forty-two thousand, seven hundred twenty-one".