204465105405 has 96 divisors (see below), whose sum is σ = 388455395328. Its totient is φ = 98666467200.

The previous prime is 204465105337. The next prime is 204465105409. The reversal of 204465105405 is 504501564402.

204465105405 is a `hidden beast` number, since 2 + 0 + 44 + 65 + 10 + 540 + 5 = 666.

It is not a de Polignac number, because 204465105405 - 2⁷ = 204465105277 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204465105405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204465105409) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 166096140 + ... + 166097370.

It is an arithmetic number, because the mean of its divisors is an integer number (4046410368).

Almost surely, 2^204465105405 is an apocalyptic number.

It is an amenable number.

204465105405 is a deficient number, since it is larger than the sum of its proper divisors (183990289923).

204465105405 is a wasteful number, since it uses less digits than its factorization.

204465105405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2567 (or 2564 counting only the distinct ones).

The product of its (nonzero) digits is 96000, while the sum is 36.

Adding to 204465105405 its reverse (504501564402), we get a palindrome (708966669807).

The spelling of 204465105405 in words is "two hundred four billion, four hundred sixty-five million, one hundred five thousand, four hundred five".