326633967361 has 9 divisors (see below), whose sum is σ = 353700447939. Its totient is φ = 301501419336.

The previous prime is 326633967349. The next prime is 326633967367. The reversal of 326633967361 is 163769336623.

The square root of 326633967361 is 571519.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 48318634225 + 278315333136 = 219815^2 + 527556^2 .

It is not a de Polignac number, because 326633967361 - 2⁵ = 326633967329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (326633967367) 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 8 ways as a sum of consecutive naturals, for example, 7407766 + ... + 7451728.

It is an arithmetic number, because the mean of its divisors is an integer number (39300049771).

Almost surely, 2^326633967361 is an apocalyptic number.

326633967361 is the 571519-th square number.

326633967361 is the 285760-th centered octagonal number.

It is an amenable number.

326633967361 is a deficient number, since it is larger than the sum of its proper divisors (27066480578).

326633967361 is an frugal number, since it uses more digits than its factorization.

326633967361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87952 (or 43976 counting only the distinct ones).

The product of its digits is 13226976, while the sum is 55.

The spelling of 326633967361 in words is "three hundred twenty-six billion, six hundred thirty-three million, nine hundred sixty-seven thousand, three hundred sixty-one".