204591573124 has 27 divisors (see below), whose sum is σ = 374316885733. Its totient is φ = 97838192672.

The previous prime is 204591573091. The next prime is 204591573167. The reversal of 204591573124 is 421375195402.

The square root of 204591573124 is 452318.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 106517376900 + 98074196224 = 326370^2 + 313168^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 20801712 + ... + 20811544.

Almost surely, 2^204591573124 is an apocalyptic number.

204591573124 is the 452318-th square number.

It is an amenable number.

204591573124 is a deficient number, since it is larger than the sum of its proper divisors (169725312609).

204591573124 is an frugal number, since it uses more digits than its factorization.

204591573124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19716 (or 9858 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 204591573124 in words is "two hundred four billion, five hundred ninety-one million, five hundred seventy-three thousand, one hundred twenty-four".