326320505523 has 32 divisors (see below), whose sum is σ = 484429897280. Its totient is φ = 217100943360.

The previous prime is 326320505521. The next prime is 326320505579. The reversal of 326320505523 is 325505023623.

326320505523 is a `hidden beast` number, since 3 + 2 + 63 + 20 + 50 + 5 + 523 = 666.

It is not a de Polignac number, because 326320505523 - 2¹ = 326320505521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (326320505521) 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 31 ways as a sum of consecutive naturals, for example, 41444115 + ... + 41451987.

It is an arithmetic number, because the mean of its divisors is an integer number (15138434290).

Almost surely, 2^326320505523 is an apocalyptic number.

326320505523 is a deficient number, since it is larger than the sum of its proper divisors (158109391757).

326320505523 is a wasteful number, since it uses less digits than its factorization.

326320505523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10836 (or 10830 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 36.

The spelling of 326320505523 in words is "three hundred twenty-six billion, three hundred twenty million, five hundred five thousand, five hundred twenty-three".