204402410405 has 8 divisors (see below), whose sum is σ = 246353998200. Its totient is φ = 162807857856.

The previous prime is 204402410393. The next prime is 204402410413. The reversal of 204402410405 is 504014204402.

It can be written as a sum of positive squares in 4 ways, for example, as 135872594881 + 68529815524 = 368609^2 + 261782^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204402410405 - 2¹⁰ = 204402409381 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89257550 + ... + 89259839.

It is an arithmetic number, because the mean of its divisors is an integer number (30794249775).

Almost surely, 2^204402410405 is an apocalyptic number.

It is an amenable number.

204402410405 is a deficient number, since it is larger than the sum of its proper divisors (41951587795).

204402410405 is a wasteful number, since it uses less digits than its factorization.

204402410405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178517623.

The product of its (nonzero) digits is 5120, while the sum is 26.

Adding to 204402410405 its reverse (504014204402), we get a palindrome (708416614807).

The spelling of 204402410405 in words is "two hundred four billion, four hundred two million, four hundred ten thousand, four hundred five".