204451013443 has 4 divisors (see below), whose sum is σ = 204721094800. Its totient is φ = 204180932088.

The previous prime is 204451013419. The next prime is 204451013447. The reversal of 204451013443 is 344310154402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204451013443 - 2¹⁷ = 204450882371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204451013447) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 135039543 + ... + 135041056.

It is an arithmetic number, because the mean of its divisors is an integer number (51180273700).

Almost surely, 2^204451013443 is an apocalyptic number.

204451013443 is a deficient number, since it is larger than the sum of its proper divisors (270081357).

204451013443 is an equidigital number, since it uses as much as digits as its factorization.

204451013443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270081356.

The product of its (nonzero) digits is 23040, while the sum is 31.

Adding to 204451013443 its reverse (344310154402), we get a palindrome (548761167845).

The spelling of 204451013443 in words is "two hundred four billion, four hundred fifty-one million, thirteen thousand, four hundred forty-three".