204721244960 has 24 divisors (see below), whose sum is σ = 483653941596. Its totient is φ = 81888497920.

The previous prime is 204721244957. The next prime is 204721244993. The reversal of 204721244960 is 69442127402.

It can be written as a sum of positive squares in 2 ways, for example, as 174346332304 + 30374912656 = 417548^2 + 174284^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 639753731 + ... + 639754050.

Almost surely, 2^204721244960 is an apocalyptic number.

204721244960 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204721244960 is an abundant number, since it is smaller than the sum of its proper divisors (278932696636).

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

204721244960 is a wasteful number, since it uses less digits than its factorization.

204721244960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279507796 (or 1279507788 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 41.

The spelling of 204721244960 in words is "two hundred four billion, seven hundred twenty-one million, two hundred forty-four thousand, nine hundred sixty".