12128672111438 has 8 divisors (see below), whose sum is σ = 18193045289520. Its totient is φ = 6064323681600.

The previous prime is 12128672111419. The next prime is 12128672111467. The reversal of 12128672111438 is 83411127682121.

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 = 12128672111392 and 12128672111401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4909058 + ... + 6953861.

It is an arithmetic number, because the mean of its divisors is an integer number (2274130661190).

Almost surely, 2^{12128672111438} is an apocalyptic number.

12128672111438 is a deficient number, since it is larger than the sum of its proper divisors (6064373178082).

12128672111438 is a wasteful number, since it uses less digits than its factorization.

12128672111438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12374122.

The product of its digits is 258048, while the sum is 47.

Adding to 12128672111438 its reverse (83411127682121), we get a palindrome (95539799793559).

The spelling of 12128672111438 in words is "twelve trillion, one hundred twenty-eight billion, six hundred seventy-two million, one hundred eleven thousand, four hundred thirty-eight".