204261252643055 has 32 divisors (see below), whose sum is σ = 253148505292800. Its totient is φ = 158057687692800.

The previous prime is 204261252643043. The next prime is 204261252643139. The reversal of 204261252643055 is 550346252162402.

It is not a de Polignac number, because 204261252643055 - 2³⁶ = 204192533166319 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 (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3889849250 + ... + 3889901760.

It is an arithmetic number, because the mean of its divisors is an integer number (7910890790400).

Almost surely, 2^{204261252643055} is an apocalyptic number.

204261252643055 is a deficient number, since it is larger than the sum of its proper divisors (48887252649745).

204261252643055 is a wasteful number, since it uses less digits than its factorization.

204261252643055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64775.

The product of its (nonzero) digits is 3456000, while the sum is 47.

The spelling of 204261252643055 in words is "two hundred four trillion, two hundred sixty-one billion, two hundred fifty-two million, six hundred forty-three thousand, fifty-five".