204088315356815 has 4 divisors (see below), whose sum is σ = 244905978428184. Its totient is φ = 163270652285448.

The previous prime is 204088315356713. The next prime is 204088315356923. The reversal of 204088315356815 is 518653513880402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204088315356815 - 2¹⁰ = 204088315355791 is a prime.

It is a Duffinian number.

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 3 ways as a sum of consecutive naturals, for example, 20408831535677 + ... + 20408831535686.

It is an arithmetic number, because the mean of its divisors is an integer number (61226494607046).

Almost surely, 2^{204088315356815} is an apocalyptic number.

204088315356815 is a deficient number, since it is larger than the sum of its proper divisors (40817663071369).

204088315356815 is an equidigital number, since it uses as much as digits as its factorization.

204088315356815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40817663071368.

The product of its (nonzero) digits is 27648000, while the sum is 59.

The spelling of 204088315356815 in words is "two hundred four trillion, eighty-eight billion, three hundred fifteen million, three hundred fifty-six thousand, eight hundred fifteen".