128068511 has 8 divisors (see below), whose sum is σ = 131324544. Its totient is φ = 124843680.

The previous prime is 128068489. The next prime is 128068517. The reversal of 128068511 is 115860821.

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-128068511 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 (128068517) 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, 626 + ... + 16016.

It is an arithmetic number, because the mean of its divisors is an integer number (16415568).

Almost surely, 2^128068511 is an apocalyptic number.

128068511 is a deficient number, since it is larger than the sum of its proper divisors (3256033).

128068511 is a wasteful number, since it uses less digits than its factorization.

128068511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15601.

The product of its (nonzero) digits is 3840, while the sum is 32.

The square root of 128068511 is about 11316.7358809862. The cubic root of 128068511 is about 504.0583189738.

The spelling of 128068511 in words is "one hundred twenty-eight million, sixty-eight thousand, five hundred eleven".