204434342401 has 4 divisors (see below), whose sum is σ = 216459891972. Its totient is φ = 192408792832.

The previous prime is 204434342377. The next prime is 204434342429. The reversal of 204434342401 is 104243434402.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 104243434402 = 2 ⋅52121717201.

It can be written as a sum of positive squares in 2 ways, for example, as 146095186176 + 58339156225 = 382224^2 + 241535^2 .

It is a cyclic number.

It is not a de Polignac number, because 204434342401 - 2¹¹ = 204434340353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204434342701) 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, 6012774760 + ... + 6012774793.

It is an arithmetic number, because the mean of its divisors is an integer number (54114972993).

Almost surely, 2^204434342401 is an apocalyptic number.

It is an amenable number.

204434342401 is a deficient number, since it is larger than the sum of its proper divisors (12025549571).

204434342401 is a wasteful number, since it uses less digits than its factorization.

204434342401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12025549570.

The product of its (nonzero) digits is 36864, while the sum is 31.

Adding to 204434342401 its reverse (104243434402), we get a palindrome (308677776803).

The spelling of 204434342401 in words is "two hundred four billion, four hundred thirty-four million, three hundred forty-two thousand, four hundred one".