326004040205 has 4 divisors (see below), whose sum is σ = 391204848252. Its totient is φ = 260803232160.

The previous prime is 326004040157. The next prime is 326004040223. The reversal of 326004040205 is 502040400623.

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 91405242889 + 234598797316 = 302333^2 + 484354^2 .

It is not a de Polignac number, because 326004040205 - 2¹⁰ = 326004039181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32600404016 + ... + 32600404025.

It is an arithmetic number, because the mean of its divisors is an integer number (97801212063).

Almost surely, 2^326004040205 is an apocalyptic number.

It is an amenable number.

326004040205 is a deficient number, since it is larger than the sum of its proper divisors (65200808047).

326004040205 is an equidigital number, since it uses as much as digits as its factorization.

326004040205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65200808046.

The product of its (nonzero) digits is 5760, while the sum is 26.

Adding to 326004040205 its reverse (502040400623), we get a palindrome (828044440828).

The spelling of 326004040205 in words is "three hundred twenty-six billion, four million, forty thousand, two hundred five".