204321400143040 has 56 divisors (see below), whose sum is σ = 502235183601792. Its totient is φ = 79092154890240.

The previous prime is 204321400143011. The next prime is 204321400143041. The reversal of 204321400143040 is 40341004123402.

It is a super-2 number, since 2×204321400143040² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204321400143041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10298447749 + ... + 10298467588.

Almost surely, 2^{204321400143040} is an apocalyptic number.

204321400143040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204321400143040 is an abundant number, since it is smaller than the sum of its proper divisors (297913783458752).

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

204321400143040 is a wasteful number, since it uses less digits than its factorization.

204321400143040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20596915385 (or 20596915375 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 204321400143040 its reverse (40341004123402), we get a palindrome (244662404266442).

The spelling of 204321400143040 in words is "two hundred four trillion, three hundred twenty-one billion, four hundred million, one hundred forty-three thousand, forty".