204420235105340 has 12 divisors (see below), whose sum is σ = 429282493721256. Its totient is φ = 81768094042128.

The previous prime is 204420235105327. The next prime is 204420235105349. The reversal of 204420235105340 is 43501532024402.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 204420235105340.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204420235105349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5110505877614 + ... + 5110505877653.

It is an arithmetic number, because the mean of its divisors is an integer number (35773541143438).

Almost surely, 2^{204420235105340} is an apocalyptic number.

204420235105340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204420235105340 is an abundant number, since it is smaller than the sum of its proper divisors (224862258615916).

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

204420235105340 is a wasteful number, since it uses less digits than its factorization.

204420235105340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10221011755276 (or 10221011755274 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 204420235105340 its reverse (43501532024402), we get a palindrome (247921767129742).

The spelling of 204420235105340 in words is "two hundred four trillion, four hundred twenty billion, two hundred thirty-five million, one hundred five thousand, three hundred forty".