128631601180 has 24 divisors (see below), whose sum is σ = 270316251072. Its totient is φ = 51416471232.

The previous prime is 128631601129. The next prime is 128631601181. The reversal of 128631601180 is 81106136821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128631601181) 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 7 ways as a sum of consecutive naturals, for example, 2231407 + ... + 2288326.

It is an arithmetic number, because the mean of its divisors is an integer number (11263177128).

Almost surely, 2^128631601180 is an apocalyptic number.

128631601180 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

128631601180 is an abundant number, since it is smaller than the sum of its proper divisors (141684649892).

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

128631601180 is a wasteful number, since it uses less digits than its factorization.

128631601180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4521165 (or 4521163 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The spelling of 128631601180 in words is "one hundred twenty-eight billion, six hundred thirty-one million, six hundred one thousand, one hundred eighty".