128702834106 has 432 divisors, whose sum is σ = 357461125056. Its totient is φ = 30228422400.

The previous prime is 128702834093. The next prime is 128702834123. The reversal of 128702834106 is 601438207821.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 1763052486 + ... + 1763052558.

It is an arithmetic number, because the mean of its divisors is an integer number (827456308).

Almost surely, 2^128702834106 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128702834106, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (178730562528).

128702834106 is an abundant number, since it is smaller than the sum of its proper divisors (228758290950).

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

128702834106 is a wasteful number, since it uses less digits than its factorization.

128702834106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 207 (or 146 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 42.

The spelling of 128702834106 in words is "one hundred twenty-eight billion, seven hundred two million, eight hundred thirty-four thousand, one hundred six".