204412405434 has 16 divisors (see below), whose sum is σ = 410658108672. Its totient is φ = 67831918848.

The previous prime is 204412405429. The next prime is 204412405441. The reversal of 204412405434 is 434504214402.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 204412405395 and 204412405404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76385959 + ... + 76388634.

It is an arithmetic number, because the mean of its divisors is an integer number (25666131792).

Almost surely, 2^204412405434 is an apocalyptic number.

204412405434 is an abundant number, since it is smaller than the sum of its proper divisors (206245703238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204412405434 is a wasteful number, since it uses less digits than its factorization.

204412405434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152774821.

The product of its (nonzero) digits is 61440, while the sum is 33.

Adding to 204412405434 its reverse (434504214402), we get a palindrome (638916619836).

The spelling of 204412405434 in words is "two hundred four billion, four hundred twelve million, four hundred five thousand, four hundred thirty-four".