204395435020 has 24 divisors (see below), whose sum is σ = 490549044384. Its totient is φ = 70078434816.

The previous prime is 204395435003. The next prime is 204395435029. The reversal of 204395435020 is 20534593402.

It is not an unprimeable number, because it can be changed into a prime (204395435029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 729983557 + ... + 729983836.

It is an arithmetic number, because the mean of its divisors is an integer number (20439543516).

Almost surely, 2^204395435020 is an apocalyptic number.

204395435020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204395435020 is an abundant number, since it is smaller than the sum of its proper divisors (286153609364).

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

204395435020 is a wasteful number, since it uses less digits than its factorization.

204395435020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459967409 (or 1459967407 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 37.

The spelling of 204395435020 in words is "two hundred four billion, three hundred ninety-five million, four hundred thirty-five thousand, twenty".