128116159 has 4 divisors (see below), whose sum is σ = 128149560. Its totient is φ = 128082760.

The previous prime is 128116133. The next prime is 128116193. The reversal of 128116159 is 951611821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 951611821 = 23 ⋅41374427.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128116159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128110159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10069 + ... + 18910.

It is an arithmetic number, because the mean of its divisors is an integer number (32037390).

Almost surely, 2^128116159 is an apocalyptic number.

128116159 is a deficient number, since it is larger than the sum of its proper divisors (33401).

128116159 is an equidigital number, since it uses as much as digits as its factorization.

128116159 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33400.

The product of its digits is 4320, while the sum is 34.

The square root of 128116159 is about 11318.8408858858. The cubic root of 128116159 is about 504.1208230003.

The spelling of 128116159 in words is "one hundred twenty-eight million, one hundred sixteen thousand, one hundred fifty-nine".