204244442401 has 4 divisors (see below), whose sum is σ = 204308653204. Its totient is φ = 204180231600.

The previous prime is 204244442393. The next prime is 204244442417. The reversal of 204244442401 is 104244442402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104244442402 = 2 ⋅52122221201.

It can be written as a sum of positive squares in 2 ways, for example, as 57650411025 + 146594031376 = 240105^2 + 382876^2 .

It is a cyclic number.

It is not a de Polignac number, because 204244442401 - 2³ = 204244442393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204244442471) 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, 32100630 + ... + 32106991.

It is an arithmetic number, because the mean of its divisors is an integer number (51077163301).

Almost surely, 2^204244442401 is an apocalyptic number.

It is an amenable number.

204244442401 is a deficient number, since it is larger than the sum of its proper divisors (64210803).

204244442401 is an equidigital number, since it uses as much as digits as its factorization.

204244442401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64210802.

The product of its (nonzero) digits is 32768, while the sum is 31.

Adding to 204244442401 its reverse (104244442402), we get a palindrome (308488884803).

Subtracting from 204244442401 its reverse (104244442402), we obtain a palindrome (99999999999).

The spelling of 204244442401 in words is "two hundred four billion, two hundred forty-four million, four hundred forty-two thousand, four hundred one".