326993978213 has 8 divisors (see below), whose sum is σ = 374550990528. Its totient is φ = 279647862624.

The previous prime is 326993978173. The next prime is 326993978221. The reversal of 326993978213 is 312879399623.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 326993978213 - 2²⁴ = 326977200997 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 (326993978243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52720856 + ... + 52727057.

It is an arithmetic number, because the mean of its divisors is an integer number (46818873816).

Almost surely, 2^326993978213 is an apocalyptic number.

It is an amenable number.

326993978213 is a deficient number, since it is larger than the sum of its proper divisors (47557012315).

326993978213 is a wasteful number, since it uses less digits than its factorization.

326993978213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105448363.

The product of its digits is 26453952, while the sum is 62.

The spelling of 326993978213 in words is "three hundred twenty-six billion, nine hundred ninety-three million, nine hundred seventy-eight thousand, two hundred thirteen".