204554484729 has 63 divisors (see below), whose sum is σ = 356912647743. Its totient is φ = 116839431072.

The previous prime is 204554484697. The next prime is 204554484791. The reversal of 204554484729 is 927484455402.

The square root of 204554484729 is 452277.

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

204554484729 is a `hidden beast` number, since 2 + 0 + 4 + 554 + 4 + 84 + 7 + 2 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4251692025 + 200302792704 = 65205^2 + 447552^2 .

It is a tau number, because it is divible by the number of its divisors (63).

It is not a de Polignac number, because 204554484729 - 2⁵ = 204554484697 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (204554484229) 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 62 ways as a sum of consecutive naturals, for example, 85479157 + ... + 85481549.

Almost surely, 2^204554484729 is an apocalyptic number.

204554484729 is the 452277-th square number.

204554484729 is the 226139-th centered octagonal number.

It is an amenable number.

204554484729 is a deficient number, since it is larger than the sum of its proper divisors (152358163014).

204554484729 is an frugal number, since it uses more digits than its factorization.

204554484729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4818 (or 2403 counting only the distinct ones).

The product of its (nonzero) digits is 12902400, while the sum is 54.

The spelling of 204554484729 in words is "two hundred four billion, five hundred fifty-four million, four hundred eighty-four thousand, seven hundred twenty-nine".