204513643325255 has 16 divisors (see below), whose sum is σ = 267811487944704. Its totient is φ = 148690230322080.

The previous prime is 204513643325191. The next prime is 204513643325279. The reversal of 204513643325255 is 552523346315402.

It is a happy number.

It is not a de Polignac number, because 204513643325255 - 2⁶ = 204513643325191 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 (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 586884527 + ... + 587232896.

It is an arithmetic number, because the mean of its divisors is an integer number (16738217996544).

Almost surely, 2^{204513643325255} is an apocalyptic number.

204513643325255 is a deficient number, since it is larger than the sum of its proper divisors (63297844619449).

204513643325255 is a wasteful number, since it uses less digits than its factorization.

204513643325255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174120606.

The product of its (nonzero) digits is 12960000, while the sum is 50.

The spelling of 204513643325255 in words is "two hundred four trillion, five hundred thirteen billion, six hundred forty-three million, three hundred twenty-five thousand, two hundred fifty-five".