204365040635 has 20 divisors (see below), whose sum is σ = 286094050368. Its totient is φ = 140136019632.

The previous prime is 204365040631. The next prime is 204365040647. The reversal of 204365040635 is 536040563402.

It is a happy number.

It is not a de Polignac number, because 204365040635 - 2² = 204365040631 is a prime.

It is not an unprimeable number, because it can be changed into a prime (204365040631) 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 19 ways as a sum of consecutive naturals, for example, 8499659 + ... + 8523668.

Almost surely, 2^204365040635 is an apocalyptic number.

204365040635 is a deficient number, since it is larger than the sum of its proper divisors (81729009733).

204365040635 is an frugal number, since it uses more digits than its factorization.

204365040635 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17023360 (or 17023339 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 38.

The spelling of 204365040635 in words is "two hundred four billion, three hundred sixty-five million, forty thousand, six hundred thirty-five".