204433020413240 has 128 divisors (see below), whose sum is σ = 492307545945600. Its totient is φ = 76216489198080.

The previous prime is 204433020413239. The next prime is 204433020413243. The reversal of 204433020413240 is 42314020334402.

It is a junction number, because it is equal to n+sod(n) for n = 204433020413197 and 204433020413206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204433020413243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10408970 + ... + 22742310.

It is an arithmetic number, because the mean of its divisors is an integer number (3846152702700).

Almost surely, 2^{204433020413240} is an apocalyptic number.

204433020413240 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 204433020413240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246153772972800).

204433020413240 is an abundant number, since it is smaller than the sum of its proper divisors (287874525532360).

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

204433020413240 is a wasteful number, since it uses less digits than its factorization.

204433020413240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12333837 (or 12333833 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 32.

Adding to 204433020413240 its reverse (42314020334402), we get a palindrome (246747040747642).

The spelling of 204433020413240 in words is "two hundred four trillion, four hundred thirty-three billion, twenty million, four hundred thirteen thousand, two hundred forty".