128135358111 has 8 divisors (see below), whose sum is σ = 171450845440. Its totient is φ = 85121721432.

The previous prime is 128135358041. The next prime is 128135358173. The reversal of 128135358111 is 111853531821.

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

It is not a de Polignac number, because 128135358111 - 2⁹ = 128135357599 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128135358111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128135358311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 75461671 + ... + 75463368.

It is an arithmetic number, because the mean of its divisors is an integer number (21431355680).

Almost surely, 2^128135358111 is an apocalyptic number.

128135358111 is a deficient number, since it is larger than the sum of its proper divisors (43315487329).

128135358111 is a wasteful number, since it uses less digits than its factorization.

128135358111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150925325.

The product of its digits is 28800, while the sum is 39.

Adding to 128135358111 its reverse (111853531821), we get a palindrome (239988889932).

The spelling of 128135358111 in words is "one hundred twenty-eight billion, one hundred thirty-five million, three hundred fifty-eight thousand, one hundred eleven".