204434133234540 has 96 divisors (see below), whose sum is σ = 635037307672320. Its totient is φ = 48719793427200.

The previous prime is 204434133234521. The next prime is 204434133234607. The reversal of 204434133234540 is 45432331434402.

It is a junction number, because it is equal to n+sod(n) for n = 204434133234492 and 204434133234501.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2624949931 + ... + 2625027810.

It is an arithmetic number, because the mean of its divisors is an integer number (6614971954920).

Almost surely, 2^{204434133234540} is an apocalyptic number.

204434133234540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204434133234540 is an abundant number, since it is smaller than the sum of its proper divisors (430603174437780).

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

204434133234540 is a wasteful number, since it uses less digits than its factorization.

204434133234540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5249977823 (or 5249977821 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 42.

Adding to 204434133234540 its reverse (45432331434402), we get a palindrome (249866464668942).

The spelling of 204434133234540 in words is "two hundred four trillion, four hundred thirty-four billion, one hundred thirty-three million, two hundred thirty-four thousand, five hundred forty".