204872340020 has 12 divisors (see below), whose sum is σ = 430231914084. Its totient is φ = 81948936000.

The previous prime is 204872340019. The next prime is 204872340121. The reversal of 204872340020 is 20043278402.

It can be written as a sum of positive squares in 2 ways, for example, as 91864760464 + 113007579556 = 303092^2 + 336166^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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, 5121808481 + ... + 5121808520.

It is an arithmetic number, because the mean of its divisors is an integer number (35852659507).

Almost surely, 2^204872340020 is an apocalyptic number.

204872340020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204872340020 is an abundant number, since it is smaller than the sum of its proper divisors (225359574064).

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

204872340020 is a wasteful number, since it uses less digits than its factorization.

204872340020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10243617010 (or 10243617008 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 32.

The spelling of 204872340020 in words is "two hundred four billion, eight hundred seventy-two million, three hundred forty thousand, twenty".