204055549500 has 288 divisors, whose sum is σ = 662129762112. Its totient is φ = 48787200000.

The previous prime is 204055549493. The next prime is 204055549501. The reversal of 204055549500 is 5945550402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204055549501) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13241800 + ... + 13257200.

It is an arithmetic number, because the mean of its divisors is an integer number (2299061674).

Almost surely, 2^204055549500 is an apocalyptic number.

204055549500 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 204055549500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (331064881056).

204055549500 is an abundant number, since it is smaller than the sum of its proper divisors (458074212612).

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

204055549500 is a wasteful number, since it uses less digits than its factorization.

204055549500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15518 (or 15495 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 39.

The spelling of 204055549500 in words is "two hundred four billion, fifty-five million, five hundred forty-nine thousand, five hundred".