326491064201 has 2 divisors, whose sum is σ = 326491064202. Its totient is φ = 326491064200.

The previous prime is 326491064197. The next prime is 326491064279. The reversal of 326491064201 is 102460194623.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 305189953600 + 21301110601 = 552440^2 + 145949^2 .

It is an emirp because it is prime and its reverse (102460194623) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 326491064201 - 2² = 326491064197 is a prime.

It is not a weakly prime, because it can be changed into another prime (326491064701) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163245532100 + 163245532101.

It is an arithmetic number, because the mean of its divisors is an integer number (163245532101).

Almost surely, 2^326491064201 is an apocalyptic number.

It is an amenable number.

326491064201 is a deficient number, since it is larger than the sum of its proper divisors (1).

326491064201 is an equidigital number, since it uses as much as digits as its factorization.

326491064201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 62208, while the sum is 38.

The spelling of 326491064201 in words is "three hundred twenty-six billion, four hundred ninety-one million, sixty-four thousand, two hundred one".