204023240020 has 48 divisors (see below), whose sum is σ = 453732381648. Its totient is φ = 76795084800.

The previous prime is 204023239999. The next prime is 204023240021. The reversal of 204023240020 is 20042320402.

204023240020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 76805471044 + 127217768976 = 277138^2 + 356676^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 204023240020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204023240021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1973620 + ... + 2074420.

It is an arithmetic number, because the mean of its divisors is an integer number (9452757951).

Almost surely, 2^204023240020 is an apocalyptic number.

204023240020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204023240020 is an abundant number, since it is smaller than the sum of its proper divisors (249709141628).

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

204023240020 is a wasteful number, since it uses less digits than its factorization.

204023240020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106780 (or 106778 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 19.

Adding to 204023240020 its reverse (20042320402), we get a palindrome (224065560422).

The spelling of 204023240020 in words is "two hundred four billion, twenty-three million, two hundred forty thousand, twenty".