128860896784 has 45 divisors (see below), whose sum is σ = 265268492557. Its totient is φ = 60628934912.

The previous prime is 128860896727. The next prime is 128860896793. The reversal of 128860896784 is 487698068821.

The square root of 128860896784 is 358972.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 100324227600 + 28536669184 = 316740^2 + 168928^2 .

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 24407457 + ... + 24412735.

Almost surely, 2^128860896784 is an apocalyptic number.

128860896784 is the 358972-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128860896784

128860896784 is an abundant number, since it is smaller than the sum of its proper divisors (136407595773).

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

128860896784 is an frugal number, since it uses more digits than its factorization.

128860896784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10600 (or 5298 counting only the distinct ones).

The product of its (nonzero) digits is 74317824, while the sum is 67.

The spelling of 128860896784 in words is "one hundred twenty-eight billion, eight hundred sixty million, eight hundred ninety-six thousand, seven hundred eighty-four".