204290538500 has 96 divisors (see below), whose sum is σ = 480424089600. Its totient is φ = 75605644800.

The previous prime is 204290538493. The next prime is 204290538511. The reversal of 204290538500 is 5835092402.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 297821 + ... + 705179.

It is an arithmetic number, because the mean of its divisors is an integer number (5004417600).

Almost surely, 2^204290538500 is an apocalyptic number.

204290538500 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 204290538500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240212044800).

204290538500 is an abundant number, since it is smaller than the sum of its proper divisors (276133551100).

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

204290538500 is a wasteful number, since it uses less digits than its factorization.

204290538500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 407454 (or 407442 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 38.

The spelling of 204290538500 in words is "two hundred four billion, two hundred ninety million, five hundred thirty-eight thousand, five hundred".