204088315356817 has 8 divisors (see below), whose sum is σ = 208870431566720. Its totient is φ = 199307829888720.

The previous prime is 204088315356713. The next prime is 204088315356923. The reversal of 204088315356817 is 718653513880402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204088315356817 - 2¹¹ = 204088315354769 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204082315356817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407432217 + ... + 407932822.

It is an arithmetic number, because the mean of its divisors is an integer number (26108803945840).

Almost surely, 2^{204088315356817} is an apocalyptic number.

It is an amenable number.

204088315356817 is a deficient number, since it is larger than the sum of its proper divisors (4782116209903).

204088315356817 is an equidigital number, since it uses as much as digits as its factorization.

204088315356817 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815370903.

The product of its (nonzero) digits is 38707200, while the sum is 61.

The spelling of 204088315356817 in words is "two hundred four trillion, eighty-eight billion, three hundred fifteen million, three hundred fifty-six thousand, eight hundred seventeen".