128781260076 has 96 divisors (see below), whose sum is σ = 355273633792. Its totient is φ = 35529477120.

The previous prime is 128781260057. The next prime is 128781260087. The reversal of 128781260076 is 670062187821.

It is a super-2 number, since 2×128781260076² (a number of 23 digits) contains 22 as substring.

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 31 ways as a sum of consecutive naturals, for example, 1135920 + ... + 1244136.

Almost surely, 2^128781260076 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128781260076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (177636816896).

128781260076 is an abundant number, since it is smaller than the sum of its proper divisors (226492373716).

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

128781260076 is a wasteful number, since it uses less digits than its factorization.

128781260076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108719 (or 108717 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 48.

The spelling of 128781260076 in words is "one hundred twenty-eight billion, seven hundred eighty-one million, two hundred sixty thousand, seventy-six".