326563394647 has 4 divisors (see below), whose sum is σ = 373215308176. Its totient is φ = 279911481120.

The previous prime is 326563394629. The next prime is 326563394681. The reversal of 326563394647 is 746493365623.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 746493365623 = 151 ⋅4943664673.

It is a cyclic number.

It is not a de Polignac number, because 326563394647 - 2¹⁵ = 326563361879 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 326563394591 and 326563394600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326563394687) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23325956754 + ... + 23325956767.

It is an arithmetic number, because the mean of its divisors is an integer number (93303827044).

Almost surely, 2^326563394647 is an apocalyptic number.

326563394647 is a deficient number, since it is larger than the sum of its proper divisors (46651913529).

326563394647 is an equidigital number, since it uses as much as digits as its factorization.

326563394647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46651913528.

The product of its digits is 58786560, while the sum is 58.

The spelling of 326563394647 in words is "three hundred twenty-six billion, five hundred sixty-three million, three hundred ninety-four thousand, six hundred forty-seven".