204303143243255 has 32 divisors (see below), whose sum is σ = 280241440502400. Its totient is φ = 140066450767872.

The previous prime is 204303143243231. The next prime is 204303143243317. The reversal of 204303143243255 is 552342341303402.

204303143243255 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 204303143243255 - 2²² = 204303139048951 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4895930231 + ... + 4895971959.

It is an arithmetic number, because the mean of its divisors is an integer number (8757545015700).

Almost surely, 2^{204303143243255} is an apocalyptic number.

204303143243255 is a deficient number, since it is larger than the sum of its proper divisors (75938297259145).

204303143243255 is a wasteful number, since it uses less digits than its factorization.

204303143243255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65483.

The product of its (nonzero) digits is 1036800, while the sum is 41.

Adding to 204303143243255 its reverse (552342341303402), we get a palindrome (756645484546657).

The spelling of 204303143243255 in words is "two hundred four trillion, three hundred three billion, one hundred forty-three million, two hundred forty-three thousand, two hundred fifty-five".