128843023534 has 8 divisors (see below), whose sum is σ = 196149080808. Its totient is φ = 63459996600.

The previous prime is 128843023531. The next prime is 128843023627. The reversal of 128843023534 is 435320348821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128843023531) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 480757417 + ... + 480757684.

It is an arithmetic number, because the mean of its divisors is an integer number (24518635101).

Almost surely, 2^128843023534 is an apocalyptic number.

128843023534 is a deficient number, since it is larger than the sum of its proper divisors (67306057274).

128843023534 is an equidigital number, since it uses as much as digits as its factorization.

128843023534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961515170.

The product of its (nonzero) digits is 552960, while the sum is 43.

The spelling of 128843023534 in words is "one hundred twenty-eight billion, eight hundred forty-three million, twenty-three thousand, five hundred thirty-four".