128731095564 has 24 divisors (see below), whose sum is σ = 300403225920. Its totient is φ = 42905983824.

The previous prime is 128731095547. The next prime is 128731095593. The reversal of 128731095564 is 465590137821.

It is an unprimeable number.

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, 424134 + ... + 661325.

It is an arithmetic number, because the mean of its divisors is an integer number (12516801080).

It is a 1-persistent number, because it is pandigital, but 2⋅128731095564 = 257462191128 is not.

Almost surely, 2^128731095564 is an apocalyptic number.

It is an amenable number.

128731095564 is an abundant number, since it is smaller than the sum of its proper divisors (171672130356).

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

128731095564 is a wasteful number, since it uses less digits than its factorization.

128731095564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1095349 (or 1095347 counting only the distinct ones).

The product of its (nonzero) digits is 1814400, while the sum is 51.

The spelling of 128731095564 in words is "one hundred twenty-eight billion, seven hundred thirty-one million, ninety-five thousand, five hundred sixty-four".