204442440443 has 4 divisors (see below), whose sum is σ = 204443355480. Its totient is φ = 204441525408.

The previous prime is 204442440427. The next prime is 204442440451. The reversal of 204442440443 is 344044244402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 204442440443 - 2⁴ = 204442440427 is a prime.

It is a super-2 number, since 2×204442440443² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204442440403) 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, 123971 + ... + 651347.

It is an arithmetic number, because the mean of its divisors is an integer number (51110838870).

Almost surely, 2^204442440443 is an apocalyptic number.

204442440443 is a deficient number, since it is larger than the sum of its proper divisors (915037).

204442440443 is an equidigital number, since it uses as much as digits as its factorization.

204442440443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 915036.

The product of its (nonzero) digits is 196608, while the sum is 35.

Adding to 204442440443 its reverse (344044244402), we get a palindrome (548486684845).

The spelling of 204442440443 in words is "two hundred four billion, four hundred forty-two million, four hundred forty thousand, four hundred forty-three".