204385708400 has 60 divisors (see below), whose sum is σ = 493780059000. Its totient is φ = 81297527040.

The previous prime is 204385708399. The next prime is 204385708409. The reversal of 204385708400 is 4807583402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204385708409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1355675 + ... + 1498874.

It is an arithmetic number, because the mean of its divisors is an integer number (8229667650).

Almost surely, 2^204385708400 is an apocalyptic number.

204385708400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204385708400 is an abundant number, since it is smaller than the sum of its proper divisors (289394350600).

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

204385708400 is a wasteful number, since it uses less digits than its factorization.

204385708400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854746 (or 2854735 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 41.

The spelling of 204385708400 in words is "two hundred four billion, three hundred eighty-five million, seven hundred eight thousand, four hundred".