204042004605 has 24 divisors (see below), whose sum is σ = 353764053240. Its totient is φ = 108794327040.

The previous prime is 204042004589. The next prime is 204042004613. The reversal of 204042004605 is 506400240402.

It can be written as a sum of positive squares in 4 ways, for example, as 29045362329 + 174996642276 = 170427^2 + 418326^2 .

It is not a de Polignac number, because 204042004605 - 2⁴ = 204042004589 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 407956 + ... + 757965.

It is an arithmetic number, because the mean of its divisors is an integer number (14740168885).

Almost surely, 2^204042004605 is an apocalyptic number.

It is an amenable number.

204042004605 is a deficient number, since it is larger than the sum of its proper divisors (149722048635).

204042004605 is a wasteful number, since it uses less digits than its factorization.

204042004605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1169821 (or 1169818 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The spelling of 204042004605 in words is "two hundred four billion, forty-two million, four thousand, six hundred five".