128008071011 has 4 divisors (see below), whose sum is σ = 128031786000. Its totient is φ = 127984356024.

The previous prime is 128008071001. The next prime is 128008071041. The reversal of 128008071011 is 110170800821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-128008071011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128008071001) 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, 11849396 + ... + 11860193.

It is an arithmetic number, because the mean of its divisors is an integer number (32007946500).

Almost surely, 2^128008071011 is an apocalyptic number.

128008071011 is a deficient number, since it is larger than the sum of its proper divisors (23714989).

128008071011 is an equidigital number, since it uses as much as digits as its factorization.

128008071011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23714988.

The product of its (nonzero) digits is 896, while the sum is 29.

Adding to 128008071011 its reverse (110170800821), we get a palindrome (238178871832).

The spelling of 128008071011 in words is "one hundred twenty-eight billion, eight million, seventy-one thousand, eleven".