204786844145 has 16 divisors (see below), whose sum is σ = 278576437440. Its totient is φ = 143267880384.

The previous prime is 204786844139. The next prime is 204786844151. The reversal of 204786844145 is 541448687402.

It is an interprime number because it is at equal distance from previous prime (204786844139) and next prime (204786844151).

It is a cyclic number.

It is not a de Polignac number, because 204786844145 - 2²⁰ = 204785795569 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82908419 + ... + 82910888.

It is an arithmetic number, because the mean of its divisors is an integer number (17411027340).

Almost surely, 2^204786844145 is an apocalyptic number.

It is an amenable number.

204786844145 is a deficient number, since it is larger than the sum of its proper divisors (73789593295).

204786844145 is a wasteful number, since it uses less digits than its factorization.

204786844145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165819344.

The product of its (nonzero) digits is 6881280, while the sum is 53.

The spelling of 204786844145 in words is "two hundred four billion, seven hundred eighty-six million, eight hundred forty-four thousand, one hundred forty-five".