204539653530 has 48 divisors (see below), whose sum is σ = 532951810560. Its totient is φ = 54426091104.

The previous prime is 204539653469. The next prime is 204539653567. The reversal of 204539653530 is 35356935402.

It is a happy number.

204539653530 is a `hidden beast` number, since 2 + 0 + 4 + 53 + 9 + 65 + 3 + 530 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 2412610 + ... + 2495949.

It is an arithmetic number, because the mean of its divisors is an integer number (11103162720).

Almost surely, 2^204539653530 is an apocalyptic number.

204539653530 is an abundant number, since it is smaller than the sum of its proper divisors (328412157030).

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

204539653530 is a wasteful number, since it uses less digits than its factorization.

204539653530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4909035 (or 4909032 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 45.

The spelling of 204539653530 in words is "two hundred four billion, five hundred thirty-nine million, six hundred fifty-three thousand, five hundred thirty".