204354010523420 has 48 divisors (see below), whose sum is σ = 429663680264448. Its totient is φ = 81642540925440.

The previous prime is 204354010523401. The next prime is 204354010523423. The reversal of 204354010523420 is 24325010453402.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204354010523423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96807134 + ... + 98895546.

It is an arithmetic number, because the mean of its divisors is an integer number (8951326672176).

Almost surely, 2^{204354010523420} is an apocalyptic number.

204354010523420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204354010523420 is an abundant number, since it is smaller than the sum of its proper divisors (225309669741028).

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

204354010523420 is a wasteful number, since it uses less digits than its factorization.

204354010523420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2094350 (or 2094348 counting only the distinct ones).

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

Adding to 204354010523420 its reverse (24325010453402), we get a palindrome (228679020976822).

The spelling of 204354010523420 in words is "two hundred four trillion, three hundred fifty-four billion, ten million, five hundred twenty-three thousand, four hundred twenty".