204786844146 has 12 divisors (see below), whose sum is σ = 443704829022. Its totient is φ = 68262281376.

The previous prime is 204786844139. The next prime is 204786844151. The reversal of 204786844146 is 641448687402.

204786844146 is a `hidden beast` number, since 20 + 478 + 6 + 8 + 4 + 4 + 146 = 666.

204786844146 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 117755354025 + 87031490121 = 343155^2 + 295011^2 .

It is a junction number, because it is equal to n+sod(n) for n = 204786844092 and 204786844101.

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 5 ways as a sum of consecutive naturals, for example, 5688523431 + ... + 5688523466.

Almost surely, 2^204786844146 is an apocalyptic number.

204786844146 is an abundant number, since it is smaller than the sum of its proper divisors (238917984876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204786844146 is a wasteful number, since it uses less digits than its factorization.

204786844146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11377046905 (or 11377046902 counting only the distinct ones).

The product of its (nonzero) digits is 8257536, while the sum is 54.

The spelling of 204786844146 in words is "two hundred four billion, seven hundred eighty-six million, eight hundred forty-four thousand, one hundred forty-six".