204411991700 has 216 divisors, whose sum is σ = 540752889600. Its totient is φ = 66747690240.

The previous prime is 204411991699. The next prime is 204411991717. The reversal of 204411991700 is 7199114402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 26931506 + ... + 26939094.

It is an arithmetic number, because the mean of its divisors is an integer number (2503485600).

Almost surely, 2^204411991700 is an apocalyptic number.

204411991700 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204411991700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (270376444800).

204411991700 is an abundant number, since it is smaller than the sum of its proper divisors (336340897900).

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

204411991700 is a wasteful number, since it uses less digits than its factorization.

204411991700 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7879 (or 7865 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 38.

The spelling of 204411991700 in words is "two hundred four billion, four hundred eleven million, nine hundred ninety-one thousand, seven hundred".