204440121163 has 16 divisors (see below), whose sum is σ = 215655840000. Its totient is φ = 193270402080.

The previous prime is 204440121107. The next prime is 204440121227. The reversal of 204440121163 is 361121044402.

It is a cyclic number.

It is not a de Polignac number, because 204440121163 - 2²⁹ = 203903250251 is a prime.

It is a super-2 number, since 2×204440121163² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204440121763) 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, 21156553 + ... + 21166213.

It is an arithmetic number, because the mean of its divisors is an integer number (13478490000).

Almost surely, 2^204440121163 is an apocalyptic number.

204440121163 is a deficient number, since it is larger than the sum of its proper divisors (11215718837).

204440121163 is a wasteful number, since it uses less digits than its factorization.

204440121163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11922.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 204440121163 its reverse (361121044402), we get a palindrome (565561165565).

The spelling of 204440121163 in words is "two hundred four billion, four hundred forty million, one hundred twenty-one thousand, one hundred sixty-three".