204352314304021 has 16 divisors (see below), whose sum is σ = 221295452112000. Its totient is φ = 187585004996928.

The previous prime is 204352314303997. The next prime is 204352314304043. The reversal of 204352314304021 is 120403413253402.

It is a cyclic number.

It is not a de Polignac number, because 204352314304021 - 2⁴¹ = 202153291048469 is a prime.

It is a super-2 number, since 2×204352314304021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204352314304051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16186291 + ... + 25897888.

It is an arithmetic number, because the mean of its divisors is an integer number (13830965757000).

Almost surely, 2^{204352314304021} is an apocalyptic number.

It is an amenable number.

204352314304021 is a deficient number, since it is larger than the sum of its proper divisors (16943137807979).

204352314304021 is a wasteful number, since it uses less digits than its factorization.

204352314304021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42086268.

The product of its (nonzero) digits is 69120, while the sum is 34.

Adding to 204352314304021 its reverse (120403413253402), we get a palindrome (324755727557423).

The spelling of 204352314304021 in words is "two hundred four trillion, three hundred fifty-two billion, three hundred fourteen million, three hundred four thousand, twenty-one".