326213456663 has 4 divisors (see below), whose sum is σ = 326217461760. Its totient is φ = 326209451568.

The previous prime is 326213456659. The next prime is 326213456669. The reversal of 326213456663 is 366654312623.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366654312623 = 107941 ⋅3396803.

It is a cyclic number.

It is not a de Polignac number, because 326213456663 - 2² = 326213456659 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326213456669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1877783 + ... + 2044136.

It is an arithmetic number, because the mean of its divisors is an integer number (81554365440).

Almost surely, 2^326213456663 is an apocalyptic number.

326213456663 is a deficient number, since it is larger than the sum of its proper divisors (4005097).

326213456663 is an equidigital number, since it uses as much as digits as its factorization.

326213456663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4005096.

The product of its digits is 2799360, while the sum is 47.

The spelling of 326213456663 in words is "three hundred twenty-six billion, two hundred thirteen million, four hundred fifty-six thousand, six hundred sixty-three".