204240213330440 has 64 divisors (see below), whose sum is σ = 525195627494400. Its totient is φ = 70024348332288.

The previous prime is 204240213330383. The next prime is 204240213330481. The reversal of 204240213330440 is 44033312042402.

It is a junction number, because it is equal to n+sod(n) for n = 204240213330397 and 204240213330406.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18324542 + ... + 27281298.

It is an arithmetic number, because the mean of its divisors is an integer number (8206181679600).

Almost surely, 2^{204240213330440} is an apocalyptic number.

204240213330440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204240213330440 is an abundant number, since it is smaller than the sum of its proper divisors (320955414163960).

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

204240213330440 is a wasteful number, since it uses less digits than its factorization.

204240213330440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9038214 (or 9038210 counting only the distinct ones).

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

Adding to 204240213330440 its reverse (44033312042402), we get a palindrome (248273525372842).

The spelling of 204240213330440 in words is "two hundred four trillion, two hundred forty billion, two hundred thirteen million, three hundred thirty thousand, four hundred forty".