208604541161 has 8 divisors (see below), whose sum is σ = 210958633800. Its totient is φ = 206250675840.

The previous prime is 208604541139. The next prime is 208604541193. The reversal of 208604541161 is 161145406802.

It can be written as a sum of positive squares in 4 ways, for example, as 48239533225 + 160365007936 = 219635^2 + 400456^2 .

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 208604541161 - 2⁶ = 208604541097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (208604541461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2369471 + ... + 2455931.

It is an arithmetic number, because the mean of its divisors is an integer number (26369829225).

Almost surely, 2^208604541161 is an apocalyptic number.

It is an amenable number.

208604541161 is a deficient number, since it is larger than the sum of its proper divisors (2354092639).

208604541161 is an equidigital number, since it uses as much as digits as its factorization.

208604541161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113659.

The product of its (nonzero) digits is 46080, while the sum is 38.

Adding to 208604541161 its reverse (161145406802), we get a palindrome (369749947963).

The spelling of 208604541161 in words is "two hundred eight billion, six hundred four million, five hundred forty-one thousand, one hundred sixty-one".