204135802265 has 16 divisors (see below), whose sum is σ = 251660413632. Its totient is φ = 158846370624.

The previous prime is 204135802261. The next prime is 204135802271. The reversal of 204135802265 is 562208531402.

It is a happy number.

It is not a de Polignac number, because 204135802265 - 2² = 204135802261 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204135802261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 444962 + ... + 778628.

It is an arithmetic number, because the mean of its divisors is an integer number (15728775852).

Almost surely, 2^204135802265 is an apocalyptic number.

It is an amenable number.

204135802265 is a deficient number, since it is larger than the sum of its proper divisors (47524611367).

204135802265 is a wasteful number, since it uses less digits than its factorization.

204135802265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337016.

The product of its (nonzero) digits is 115200, while the sum is 38.

The spelling of 204135802265 in words is "two hundred four billion, one hundred thirty-five million, eight hundred two thousand, two hundred sixty-five".