128111111326 has 8 divisors (see below), whose sum is σ = 209636364024. Its totient is φ = 58232323320.

The previous prime is 128111111263. The next prime is 128111111347. The reversal of 128111111326 is 623111111821.

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 = 128111111294 and 128111111303.

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, 2911616145 + ... + 2911616188.

It is an arithmetic number, because the mean of its divisors is an integer number (26204545503).

Almost surely, 2^128111111326 is an apocalyptic number.

128111111326 is a deficient number, since it is larger than the sum of its proper divisors (81525252698).

128111111326 is a wasteful number, since it uses less digits than its factorization.

128111111326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5823232346.

The product of its digits is 576, while the sum is 28.

The spelling of 128111111326 in words is "one hundred twenty-eight billion, one hundred eleven million, one hundred eleven thousand, three hundred twenty-six".