204510654020 has 12 divisors (see below), whose sum is σ = 429472373484. Its totient is φ = 81804261600.

The previous prime is 204510653999. The next prime is 204510654077. The reversal of 204510654020 is 20456015402.

It can be written as a sum of positive squares in 2 ways, for example, as 90062410816 + 114448243204 = 300104^2 + 338302^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5112766331 + ... + 5112766370.

It is an arithmetic number, because the mean of its divisors is an integer number (35789364457).

Almost surely, 2^204510654020 is an apocalyptic number.

204510654020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204510654020 is an abundant number, since it is smaller than the sum of its proper divisors (224961719464).

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

204510654020 is a wasteful number, since it uses less digits than its factorization.

204510654020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10225532710 (or 10225532708 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 204510654020 its reverse (20456015402), we get a palindrome (224966669422).

The spelling of 204510654020 in words is "two hundred four billion, five hundred ten million, six hundred fifty-four thousand, twenty".