128965857846 has 16 divisors (see below), whose sum is σ = 294779103744. Its totient is φ = 36847387944.

The previous prime is 128965857841. The next prime is 128965857847. The reversal of 128965857846 is 648758569821.

128965857846 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128965857841) 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, 1535307790 + ... + 1535307873.

It is an arithmetic number, because the mean of its divisors is an integer number (18423693984).

Almost surely, 2^128965857846 is an apocalyptic number.

128965857846 is an abundant number, since it is smaller than the sum of its proper divisors (165813245898).

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

128965857846 is a wasteful number, since it uses less digits than its factorization.

128965857846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3070615675.

The product of its digits is 232243200, while the sum is 69.

The spelling of 128965857846 in words is "one hundred twenty-eight billion, nine hundred sixty-five million, eight hundred fifty-seven thousand, eight hundred forty-six".