204434161206 has 64 divisors (see below), whose sum is σ = 450617147136. Its totient is φ = 61314224000.

The previous prime is 204434161199. The next prime is 204434161207. The reversal of 204434161206 is 602161434402.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204434161207) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 35906896 + ... + 35912588.

It is an arithmetic number, because the mean of its divisors is an integer number (7040892924).

Almost surely, 2^204434161206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204434161206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (225308573568).

204434161206 is an abundant number, since it is smaller than the sum of its proper divisors (246182985930).

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

204434161206 is a wasteful number, since it uses less digits than its factorization.

204434161206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11197.

The product of its (nonzero) digits is 27648, while the sum is 33.

Adding to 204434161206 its reverse (602161434402), we get a palindrome (806595595608).

The spelling of 204434161206 in words is "two hundred four billion, four hundred thirty-four million, one hundred sixty-one thousand, two hundred six".