128608155786 has 64 divisors (see below), whose sum is σ = 282183247872. Its totient is φ = 38752560000.

The previous prime is 128608155721. The next prime is 128608155817. The reversal of 128608155786 is 687551806821.

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, 18392751 + ... + 18399741.

It is an arithmetic number, because the mean of its divisors is an integer number (4409113248).

Almost surely, 2^128608155786 is an apocalyptic number.

128608155786 is an abundant number, since it is smaller than the sum of its proper divisors (153575092086).

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

128608155786 is a wasteful number, since it uses less digits than its factorization.

128608155786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8539.

The product of its (nonzero) digits is 6451200, while the sum is 57.

The spelling of 128608155786 in words is "one hundred twenty-eight billion, six hundred eight million, one hundred fifty-five thousand, seven hundred eighty-six".