204566393930 has 32 divisors (see below), whose sum is σ = 389959491024. Its totient is φ = 76997426176.

The previous prime is 204566393917. The next prime is 204566393953. The reversal of 204566393930 is 39393665402.

204566393930 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 135602907049 + 68963486881 = 368243^2 + 262609^2 .

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 15 ways as a sum of consecutive naturals, for example, 724424 + ... + 966396.

Almost surely, 2^204566393930 is an apocalyptic number.

204566393930 is a deficient number, since it is larger than the sum of its proper divisors (185393097094).

204566393930 is a wasteful number, since it uses less digits than its factorization.

204566393930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246970.

The product of its (nonzero) digits is 3149280, while the sum is 50.

The spelling of 204566393930 in words is "two hundred four billion, five hundred sixty-six million, three hundred ninety-three thousand, nine hundred thirty".