204335304538 has 4 divisors (see below), whose sum is σ = 306502956810. Its totient is φ = 102167652268.

The previous prime is 204335304497. The next prime is 204335304539. The reversal of 204335304538 is 835403533402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 835403533402 = 2 ⋅417701766701.

It can be written as a sum of positive squares in only one way, i.e., 158720169609 + 45615134929 = 398397^2 + 213577^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 204335304538.

It is not an unprimeable number, because it can be changed into a prime (204335304539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51083826133 + ... + 51083826136.

Almost surely, 2^204335304538 is an apocalyptic number.

204335304538 is a deficient number, since it is larger than the sum of its proper divisors (102167652272).

204335304538 is a wasteful number, since it uses less digits than its factorization.

204335304538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102167652271.

The product of its (nonzero) digits is 518400, while the sum is 40.

The spelling of 204335304538 in words is "two hundred four billion, three hundred thirty-five million, three hundred four thousand, five hundred thirty-eight".