128115135643 has 8 divisors (see below), whose sum is σ = 142130813760. Its totient is φ = 114494265480.

The previous prime is 128115135619. The next prime is 128115135679. The reversal of 128115135643 is 346531511821.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128115135643 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 128115135596 and 128115135605.

It is not an unprimeable number, because it can be changed into a prime (128115138643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98701305 + ... + 98702602.

It is an arithmetic number, because the mean of its divisors is an integer number (17766351720).

Almost surely, 2^128115135643 is an apocalyptic number.

128115135643 is a deficient number, since it is larger than the sum of its proper divisors (14015678117).

128115135643 is a wasteful number, since it uses less digits than its factorization.

128115135643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197403977.

The product of its digits is 86400, while the sum is 40.

The spelling of 128115135643 in words is "one hundred twenty-eight billion, one hundred fifteen million, one hundred thirty-five thousand, six hundred forty-three".