6438087611171 has 4 divisors (see below), whose sum is σ = 6438431563200. Its totient is φ = 6437743659144.

The previous prime is 6438087611161. The next prime is 6438087611243. The reversal of 6438087611171 is 1711167808346.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6438087611171 is a prime.

It is a super-2 number, since 2×6438087611171² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6438087611161) 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, 171947936 + ... + 171985373.

It is an arithmetic number, because the mean of its divisors is an integer number (1609607890800).

Almost surely, 2^{6438087611171} is an apocalyptic number.

6438087611171 is a deficient number, since it is larger than the sum of its proper divisors (343952029).

6438087611171 is a wasteful number, since it uses less digits than its factorization.

6438087611171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343952028.

The product of its (nonzero) digits is 1354752, while the sum is 53.

The spelling of 6438087611171 in words is "six trillion, four hundred thirty-eight billion, eighty-seven million, six hundred eleven thousand, one hundred seventy-one".