204434340140 has 72 divisors (see below), whose sum is σ = 466657688112. Its totient is φ = 75173575680.

The previous prime is 204434340139. The next prime is 204434340161. The reversal of 204434340140 is 41043434402.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 162731 + ... + 659810.

Almost surely, 2^204434340140 is an apocalyptic number.

204434340140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204434340140 is an abundant number, since it is smaller than the sum of its proper divisors (262223347972).

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

204434340140 is a wasteful number, since it uses less digits than its factorization.

204434340140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 822627 (or 822608 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 29.

Adding to 204434340140 its reverse (41043434402), we get a palindrome (245477774542).

The spelling of 204434340140 in words is "two hundred four billion, four hundred thirty-four million, three hundred forty thousand, one hundred forty".