6438917581327 has 24 divisors (see below), whose sum is σ = 8092106108576. Its totient is φ = 5015137248000.

The previous prime is 6438917581307. The next prime is 6438917581367. The reversal of 6438917581327 is 7231857198346.

6438917581327 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6438917581327 - 2¹⁹ = 6438917057039 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6438917581307) 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 23 ways as a sum of consecutive naturals, for example, 265627 + ... + 3598387.

Almost surely, 2^{6438917581327} is an apocalyptic number.

6438917581327 is a deficient number, since it is larger than the sum of its proper divisors (1653188527249).

6438917581327 is a wasteful number, since it uses less digits than its factorization.

6438917581327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3335071 (or 3335060 counting only the distinct ones).

The product of its digits is 60963840, while the sum is 64.

The spelling of 6438917581327 in words is "six trillion, four hundred thirty-eight billion, nine hundred seventeen million, five hundred eighty-one thousand, three hundred twenty-seven".