204400312432 has 20 divisors (see below), whose sum is σ = 396046459440. Its totient is φ = 102194774528.

The previous prime is 204400312427. The next prime is 204400312483. The reversal of 204400312432 is 234213004402.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 204400312397 and 204400312406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13633 + ... + 639520.

It is an arithmetic number, because the mean of its divisors is an integer number (19802322972).

Almost surely, 2^204400312432 is an apocalyptic number.

It is an amenable number.

204400312432 is a deficient number, since it is larger than the sum of its proper divisors (191646147008).

204400312432 is a wasteful number, since it uses less digits than its factorization.

204400312432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672720 (or 672714 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 204400312432 its reverse (234213004402), we get a palindrome (438613316834).

The spelling of 204400312432 in words is "two hundred four billion, four hundred million, three hundred twelve thousand, four hundred thirty-two".