128851188100 has 18 divisors (see below), whose sum is σ = 279607078394. Its totient is φ = 51540475200.

The previous prime is 128851188083. The next prime is 128851188107. The reversal of 128851188100 is 1881158821.

It can be written as a sum of positive squares in 3 ways, for example, as 1596322116 + 127254865984 = 39954^2 + 356728^2 .

It is a super-2 number, since 2×128851188100² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (128851188107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 644255841 + ... + 644256040.

Almost surely, 2^128851188100 is an apocalyptic number.

128851188100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128851188100 is an abundant number, since it is smaller than the sum of its proper divisors (150755890294).

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

128851188100 is a wasteful number, since it uses less digits than its factorization.

128851188100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288511895 (or 1288511888 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 43.

The spelling of 128851188100 in words is "one hundred twenty-eight billion, eight hundred fifty-one million, one hundred eighty-eight thousand, one hundred".