128065013 has 8 divisors (see below), whose sum is σ = 131220000. Its totient is φ = 124937488.

The previous prime is 128064977. The next prime is 128065019. The reversal of 128065013 is 310560821.

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

It is a cyclic number.

It is not a de Polignac number, because 128065013 - 2⁶ = 128064949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128065019) 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, 2738 + ... + 16236.

It is an arithmetic number, because the mean of its divisors is an integer number (16402500).

Almost surely, 2^128065013 is an apocalyptic number.

It is an amenable number.

128065013 is a deficient number, since it is larger than the sum of its proper divisors (3154987).

128065013 is a wasteful number, since it uses less digits than its factorization.

128065013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13731.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 128065013 is about 11316.5813300661. The cubic root of 128065013 is about 504.0537297321.

The spelling of 128065013 in words is "one hundred twenty-eight million, sixty-five thousand, thirteen".