204960718989 has 24 divisors (see below), whose sum is σ = 318928970360. Its totient is φ = 126089644032.

The previous prime is 204960718939. The next prime is 204960718993. The reversal of 204960718989 is 989817069402.

204960718989 is a `hidden beast` number, since 2 + 0 + 4 + 9 + 607 + 18 + 9 + 8 + 9 = 666.

204960718989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 40023203364 + 164937515625 = 200058^2 + 406125^2 .

It is not a de Polignac number, because 204960718989 - 2¹⁶ = 204960653453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204960718939) 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 23 ways as a sum of consecutive naturals, for example, 94377 + ... + 647169.

Almost surely, 2^204960718989 is an apocalyptic number.

It is an amenable number.

204960718989 is a deficient number, since it is larger than the sum of its proper divisors (113968251371).

204960718989 is a wasteful number, since it uses less digits than its factorization.

204960718989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 555981 (or 555978 counting only the distinct ones).

The product of its (nonzero) digits is 15676416, while the sum is 63.

The spelling of 204960718989 in words is "two hundred four billion, nine hundred sixty million, seven hundred eighteen thousand, nine hundred eighty-nine".