128181670770 has 64 divisors (see below), whose sum is σ = 314926786944. Its totient is φ = 33377809920.

The previous prime is 128181670759. The next prime is 128181670807. The reversal of 128181670770 is 77076181821.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144454 + ... + 526526.

It is an arithmetic number, because the mean of its divisors is an integer number (4920731046).

Almost surely, 2^128181670770 is an apocalyptic number.

128181670770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 128181670770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (157463393472).

128181670770 is an abundant number, since it is smaller than the sum of its proper divisors (186745116174).

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

128181670770 is a wasteful number, since it uses less digits than its factorization.

128181670770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382347.

The product of its (nonzero) digits is 263424, while the sum is 48.

The spelling of 128181670770 in words is "one hundred twenty-eight billion, one hundred eighty-one million, six hundred seventy thousand, seven hundred seventy".