204163731234 has 48 divisors (see below), whose sum is σ = 468965502720. Its totient is φ = 64079281440.

The previous prime is 204163731217. The next prime is 204163731259. The reversal of 204163731234 is 432137361402.

204163731234 is a `hidden beast` number, since 2 + 0 + 4 + 1 + 637 + 3 + 12 + 3 + 4 = 666.

204163731234 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4923744 + ... + 4965035.

It is an arithmetic number, because the mean of its divisors is an integer number (9770114640).

Almost surely, 2^204163731234 is an apocalyptic number.

204163731234 is an abundant number, since it is smaller than the sum of its proper divisors (264801771486).

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

204163731234 is a wasteful number, since it uses less digits than its factorization.

204163731234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9888855 (or 9888852 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The spelling of 204163731234 in words is "two hundred four billion, one hundred sixty-three million, seven hundred thirty-one thousand, two hundred thirty-four".