326217564543 has 12 divisors (see below), whose sum is σ = 470988673800. Its totient is φ = 200749270176.

The previous prime is 326217564529. The next prime is 326217564571. The reversal of 326217564543 is 345465712623.

It is a happy number.

It is not a de Polignac number, because 326217564543 - 2¹⁰ = 326217563519 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 326217564492 and 326217564501.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326217564503) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 321713068 + ... + 321714081.

It is an arithmetic number, because the mean of its divisors is an integer number (39249056150).

Almost surely, 2^326217564543 is an apocalyptic number.

326217564543 is a deficient number, since it is larger than the sum of its proper divisors (144771109257).

326217564543 is a wasteful number, since it uses less digits than its factorization.

326217564543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643427178 (or 643427165 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 48.

The spelling of 326217564543 in words is "three hundred twenty-six billion, two hundred seventeen million, five hundred sixty-four thousand, five hundred forty-three".