205253209804 has 24 divisors (see below), whose sum is σ = 390294732800. Its totient is φ = 94088906640.

The previous prime is 205253209801. The next prime is 205253209921. The reversal of 205253209804 is 408902352502.

It is not an unprimeable number, because it can be changed into a prime (205253209801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43557324 + ... + 43562035.

Almost surely, 2^205253209804 is an apocalyptic number.

It is an amenable number.

205253209804 is a deficient number, since it is larger than the sum of its proper divisors (185041522996).

205253209804 is a wasteful number, since it uses less digits than its factorization.

205253209804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87119413 (or 87119411 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 205253209804 in words is "two hundred five billion, two hundred fifty-three million, two hundred nine thousand, eight hundred four".