12127443543 has 6 divisors (see below), whose sum is σ = 17517418464. Its totient is φ = 8084962356.

The previous prime is 12127443541. The next prime is 12127443563. The reversal of 12127443543 is 34534472121.

12127443543 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 74 + 43 + 543 = 666.

It is not a de Polignac number, because 12127443543 - 2¹ = 12127443541 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12127443498 and 12127443507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12127443541) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 673746855 + ... + 673746872.

It is an arithmetic number, because the mean of its divisors is an integer number (2919569744).

Almost surely, 2^12127443543 is an apocalyptic number.

12127443543 is a deficient number, since it is larger than the sum of its proper divisors (5389974921).

12127443543 is a wasteful number, since it uses less digits than its factorization.

12127443543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1347493733 (or 1347493730 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The spelling of 12127443543 in words is "twelve billion, one hundred twenty-seven million, four hundred forty-three thousand, five hundred forty-three".