204023234405 has 16 divisors (see below), whose sum is σ = 253314190080. Its totient is φ = 157563002688.

The previous prime is 204023234399. The next prime is 204023234537. The reversal of 204023234405 is 504432320402.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204023234405 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 736754 + ... + 975116.

It is an arithmetic number, because the mean of its divisors is an integer number (15832136880).

Almost surely, 2^204023234405 is an apocalyptic number.

It is an amenable number.

204023234405 is a deficient number, since it is larger than the sum of its proper divisors (49290955675).

204023234405 is a wasteful number, since it uses less digits than its factorization.

204023234405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 244300.

The product of its (nonzero) digits is 23040, while the sum is 29.

Adding to 204023234405 its reverse (504432320402), we get a palindrome (708455554807).

The spelling of 204023234405 in words is "two hundred four billion, twenty-three million, two hundred thirty-four thousand, four hundred five".