204485709888 has 42 divisors (see below), whose sum is σ = 586121368014. Its totient is φ = 68161903104.

The previous prime is 204485709887. The next prime is 204485709959. The reversal of 204485709888 is 888907584402.

204485709888 is a `hidden beast` number, since 2 + 0 + 4 + 485 + 70 + 9 + 8 + 88 = 666.

It can be written as a sum of positive squares in only one way, i.e., 114888458304 + 89597251584 = 338952^2 + 299328^2 .

It is not an unprimeable number, because it can be changed into a prime (204485709881) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 177504381 + ... + 177505532.

It is an arithmetic number, because the mean of its divisors is an integer number (13955270667).

Almost surely, 2^204485709888 is an apocalyptic number.

It is an amenable number.

204485709888 is an abundant number, since it is smaller than the sum of its proper divisors (381635658126).

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

204485709888 is a wasteful number, since it uses less digits than its factorization.

204485709888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355009931 (or 355009918 counting only the distinct ones).

The product of its (nonzero) digits is 41287680, while the sum is 63.

The spelling of 204485709888 in words is "two hundred four billion, four hundred eighty-five million, seven hundred nine thousand, eight hundred eighty-eight".