128008071100 has 144 divisors (see below), whose sum is σ = 359874188800. Its totient is φ = 38380158720.

The previous prime is 128008071041. The next prime is 128008071101. The reversal of 128008071100 is 1170800821.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

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

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 197280 + ... + 543079.

Almost surely, 2^128008071100 is an apocalyptic number.

128008071100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128008071100 is an abundant number, since it is smaller than the sum of its proper divisors (231866117700).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128008071100 is a wasteful number, since it uses less digits than its factorization.

128008071100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 740412 (or 740405 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 28.

Adding to 128008071100 its reverse (1170800821), we get a palindrome (129178871921).

The spelling of 128008071100 in words is "one hundred twenty-eight billion, eight million, seventy-one thousand, one hundred".