204220020040 has 32 divisors (see below), whose sum is σ = 459520776000. Its totient is φ = 81683433664.

The previous prime is 204220020031. The next prime is 204220020077. The reversal of 204220020040 is 40020022402.

204220020040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 204220019996 and 204220020023.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 632181 + ... + 898939.

It is an arithmetic number, because the mean of its divisors is an integer number (14360024250).

Almost surely, 2^204220020040 is an apocalyptic number.

204220020040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204220020040 is an abundant number, since it is smaller than the sum of its proper divisors (255300755960).

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

204220020040 is a wasteful number, since it uses less digits than its factorization.

204220020040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285909 (or 285905 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 204220020040 its reverse (40020022402), we get a palindrome (244240042442).

The spelling of 204220020040 in words is "two hundred four billion, two hundred twenty million, twenty thousand, forty".