128008071105 has 16 divisors (see below), whose sum is σ = 204873932544. Its totient is φ = 68250631680.

The previous prime is 128008071101. The next prime is 128008071143. The reversal of 128008071105 is 501170800821.

It is not a de Polignac number, because 128008071105 - 2² = 128008071101 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128008071101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1219129 + ... + 1319958.

It is an arithmetic number, because the mean of its divisors is an integer number (12804620784).

Almost surely, 2^128008071105 is an apocalyptic number.

128008071105 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128008071105 is a deficient number, since it is larger than the sum of its proper divisors (76865861439).

128008071105 is a wasteful number, since it uses less digits than its factorization.

128008071105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2542456.

The product of its (nonzero) digits is 4480, while the sum is 33.

Adding to 128008071105 its reverse (501170800821), we get a palindrome (629178871926).

The spelling of 128008071105 in words is "one hundred twenty-eight billion, eight million, seventy-one thousand, one hundred five".