128707945824 has 96 divisors (see below), whose sum is σ = 344924262144. Its totient is φ = 42008645120.

The previous prime is 128707945787. The next prime is 128707945843. The reversal of 128707945824 is 428549707821.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2534119 + ... + 2584409.

It is an arithmetic number, because the mean of its divisors is an integer number (3592961064).

Almost surely, 2^128707945824 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128707945824, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (172462131072).

128707945824 is an abundant number, since it is smaller than the sum of its proper divisors (216216316320).

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

128707945824 is a wasteful number, since it uses less digits than its factorization.

128707945824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50860 (or 50852 counting only the distinct ones).

The product of its (nonzero) digits is 9031680, while the sum is 57.

The spelling of 128707945824 in words is "one hundred twenty-eight billion, seven hundred seven million, nine hundred forty-five thousand, eight hundred twenty-four".