12843168538 has 8 divisors (see below), whose sum is σ = 19394046900. Its totient is φ = 6378486240.

The previous prime is 12843168523. The next prime is 12843168539. The reversal of 12843168538 is 83586134821.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 11665512049 + 1177656489 = 108007^2 + 34317^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 12843168491 and 12843168500.

It is not an unprimeable number, because it can be changed into a prime (12843168539) 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, 21548643 + ... + 21549238.

Almost surely, 2^12843168538 is an apocalyptic number.

12843168538 is a deficient number, since it is larger than the sum of its proper divisors (6550878362).

12843168538 is a wasteful number, since it uses less digits than its factorization.

12843168538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43098032.

The product of its digits is 1105920, while the sum is 49.

The spelling of 12843168538 in words is "twelve billion, eight hundred forty-three million, one hundred sixty-eight thousand, five hundred thirty-eight".