326685379693 has 2 divisors, whose sum is σ = 326685379694. Its totient is φ = 326685379692.

The previous prime is 326685379597. The next prime is 326685379711. The reversal of 326685379693 is 396973586623.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186751029609 + 139934350084 = 432147^2 + 374078^2 .

It is an emirp because it is prime and its reverse (396973586623) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 326685379693 - 2¹⁷ = 326685248621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (326685349693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163342689846 + 163342689847.

It is an arithmetic number, because the mean of its divisors is an integer number (163342689847).

Almost surely, 2^326685379693 is an apocalyptic number.

It is an amenable number.

326685379693 is a deficient number, since it is larger than the sum of its proper divisors (1).

326685379693 is an equidigital number, since it uses as much as digits as its factorization.

326685379693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 264539520, while the sum is 67.

The spelling of 326685379693 in words is "three hundred twenty-six billion, six hundred eighty-five million, three hundred seventy-nine thousand, six hundred ninety-three".