204817308468 has 48 divisors (see below), whose sum is σ = 484670524800. Its totient is φ = 67311581184.

The previous prime is 204817308467. The next prime is 204817308511. The reversal of 204817308468 is 864803718402.

It is a self number, because there is not a number n which added to its sum of digits gives 204817308468.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204817308467) 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, 28393 + ... + 640656.

It is an arithmetic number, because the mean of its divisors is an integer number (10097302600).

Almost surely, 2^204817308468 is an apocalyptic number.

It is an amenable number.

204817308468 is an abundant number, since it is smaller than the sum of its proper divisors (279853216332).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204817308468 is a wasteful number, since it uses less digits than its factorization.

204817308468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669416 (or 669414 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 51.

The spelling of 204817308468 in words is "two hundred four billion, eight hundred seventeen million, three hundred eight thousand, four hundred sixty-eight".