128789235824 has 40 divisors (see below), whose sum is σ = 250259041920. Its totient is φ = 64206489600.

The previous prime is 128789235823. The next prime is 128789235859. The reversal of 128789235824 is 428532987821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128789235823) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10117784 + ... + 10130504.

It is an arithmetic number, because the mean of its divisors is an integer number (6256476048).

Almost surely, 2^128789235824 is an apocalyptic number.

It is an amenable number.

128789235824 is a deficient number, since it is larger than the sum of its proper divisors (121469806096).

128789235824 is a wasteful number, since it uses less digits than its factorization.

128789235824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14529 (or 14523 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 59.

The spelling of 128789235824 in words is "one hundred twenty-eight billion, seven hundred eighty-nine million, two hundred thirty-five thousand, eight hundred twenty-four".