128529991882 has 8 divisors (see below), whose sum is σ = 192815695296. Its totient is φ = 64258093452.

The previous prime is 128529991853. The next prime is 128529991883. The reversal of 128529991882 is 288199925821.

128529991882 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is not an unprimeable number, because it can be changed into a prime (128529991883) 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, 3427938 + ... + 3465229.

It is an arithmetic number, because the mean of its divisors is an integer number (24101961912).

Almost surely, 2^128529991882 is an apocalyptic number.

128529991882 is a deficient number, since it is larger than the sum of its proper divisors (64285703414).

128529991882 is an equidigital number, since it uses as much as digits as its factorization.

128529991882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6902492.

The product of its digits is 14929920, while the sum is 64.

The spelling of 128529991882 in words is "one hundred twenty-eight billion, five hundred twenty-nine million, nine hundred ninety-one thousand, eight hundred eighty-two".