204289066880 has 32 divisors (see below), whose sum is σ = 488378552040. Its totient is φ = 81715626496.

The previous prime is 204289066873. The next prime is 204289066967. The reversal of 204289066880 is 88660982402.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×204289066880² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159600194 + ... + 159601473.

Almost surely, 2^204289066880 is an apocalyptic number.

204289066880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204289066880 is an abundant number, since it is smaller than the sum of its proper divisors (284089485160).

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

204289066880 is an equidigital number, since it uses as much as digits as its factorization.

204289066880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319201686 (or 319201674 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 53.

The spelling of 204289066880 in words is "two hundred four billion, two hundred eighty-nine million, sixty-six thousand, eight hundred eighty".