204241220210440 has 96 divisors (see below), whose sum is σ = 535140649716120. Its totient is φ = 69950826796032.

The previous prime is 204241220210393. The next prime is 204241220210441. The reversal of 204241220210440 is 44012022142402.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 83606627919556 + 120634592290884 = 9143666^2 + 10983378^2 .

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 204241220210399 and 204241220210408.

It is not an unprimeable number, because it can be changed into a prime (204241220210441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 53768979 + ... + 57442018.

Almost surely, 2^{204241220210440} is an apocalyptic number.

204241220210440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204241220210440 is an abundant number, since it is smaller than the sum of its proper divisors (330899429505680).

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

204241220210440 is a wasteful number, since it uses less digits than its factorization.

204241220210440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111211959 (or 111211948 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 28.

Adding to 204241220210440 its reverse (44012022142402), we get a palindrome (248253242352842).

The spelling of 204241220210440 in words is "two hundred four trillion, two hundred forty-one billion, two hundred twenty million, two hundred ten thousand, four hundred forty".