326646456213 has 32 divisors (see below), whose sum is σ = 543666557952. Its totient is φ = 169477142400.

The previous prime is 326646456209. The next prime is 326646456221. The reversal of 326646456213 is 312654646623.

It is not a de Polignac number, because 326646456213 - 2² = 326646456209 is a prime.

It is a super-2 number, since 2×326646456213² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (326646456263) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 684456 + ... + 1059137.

It is an arithmetic number, because the mean of its divisors is an integer number (16989579936).

Almost surely, 2^326646456213 is an apocalyptic number.

326646456213 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

326646456213 is a deficient number, since it is larger than the sum of its proper divisors (217020101739).

326646456213 is a wasteful number, since it uses less digits than its factorization.

326646456213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1744425.

The product of its digits is 3732480, while the sum is 48.

The spelling of 326646456213 in words is "three hundred twenty-six billion, six hundred forty-six million, four hundred fifty-six thousand, two hundred thirteen".