204364572489 has 243 divisors, whose sum is σ = 402259148109. Its totient is φ = 99599401440.

The previous prime is 204364572487. The next prime is 204364572491. The reversal of 204364572489 is 984275463402.

It is a happy number.

The square root of 204364572489 is 452067.

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

204364572489 is a `hidden beast` number, since 2 + 0 + 4 + 3 + 64 + 572 + 4 + 8 + 9 = 666.

It is an interprime number because it is at equal distance from previous prime (204364572487) and next prime (204364572491).

It is not a de Polignac number, because 204364572489 - 2¹ = 204364572487 is a prime.

It is a super-2 number, since 2×204364572489² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (204364572481) by changing a digit.

It is a polite number, since it can be written in 242 ways as a sum of consecutive naturals, for example, 1984122012 + ... + 1984122114.

Almost surely, 2^204364572489 is an apocalyptic number.

204364572489 is the 452067-th square number.

204364572489 is the 226034-th centered octagonal number.

It is an amenable number.

204364572489 is a deficient number, since it is larger than the sum of its proper divisors (197894575620).

204364572489 is a wasteful number, since it uses less digits than its factorization.

204364572489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 54.

The spelling of 204364572489 in words is "two hundred four billion, three hundred sixty-four million, five hundred seventy-two thousand, four hundred eighty-nine".