204071489176897 has 4 divisors (see below), whose sum is σ = 204071640069460. Its totient is φ = 204071338284336.

The previous prime is 204071489176843. The next prime is 204071489176903. The reversal of 204071489176897 is 798671984170402.

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

It can be written as a sum of positive squares in 2 ways, for example, as 70539690261681 + 133531798915216 = 8398791^2 + 11555596^2 .

It is a cyclic number.

It is not a de Polignac number, because 204071489176897 - 2⁴³ = 195275396154689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204071489176817) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73399122 + ... + 76128667.

It is an arithmetic number, because the mean of its divisors is an integer number (51017910017365).

Almost surely, 2^{204071489176897} is an apocalyptic number.

It is an amenable number.

204071489176897 is a deficient number, since it is larger than the sum of its proper divisors (150892563).

204071489176897 is a wasteful number, since it uses less digits than its factorization.

204071489176897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150892562.

The product of its (nonzero) digits is 341397504, while the sum is 73.

The spelling of 204071489176897 in words is "two hundred four trillion, seventy-one billion, four hundred eighty-nine million, one hundred seventy-six thousand, eight hundred ninety-seven".