204363543405 has 16 divisors (see below), whose sum is σ = 373693336704. Its totient is φ = 93423334080.

The previous prime is 204363543383. The next prime is 204363543413. The reversal of 204363543405 is 504345363402.

204363543405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 204363543405 - 2⁸ = 204363543149 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 973159626 + ... + 973159835.

It is an arithmetic number, because the mean of its divisors is an integer number (23355833544).

Almost surely, 2^204363543405 is an apocalyptic number.

It is an amenable number.

204363543405 is a deficient number, since it is larger than the sum of its proper divisors (169329793299).

204363543405 is a wasteful number, since it uses less digits than its factorization.

204363543405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1946319476.

The product of its (nonzero) digits is 518400, while the sum is 39.

The spelling of 204363543405 in words is "two hundred four billion, three hundred sixty-three million, five hundred forty-three thousand, four hundred five".