128248543444785 has 16 divisors (see below), whose sum is σ = 205288184638656. Its totient is φ = 68369051461568.

The previous prime is 128248543444753. The next prime is 128248543444789. The reversal of 128248543444785 is 587444345842821.

It is a cyclic number.

It is not a de Polignac number, because 128248543444785 - 2⁵ = 128248543444753 is a prime.

It is a super-3 number, since 3×128248543444785³ (a number of 43 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (128248543444789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1885696674 + ... + 1885764683.

It is an arithmetic number, because the mean of its divisors is an integer number (12830511539916).

Almost surely, 2^{128248543444785} is an apocalyptic number.

128248543444785 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128248543444785 is a deficient number, since it is larger than the sum of its proper divisors (77039641193871).

128248543444785 is a wasteful number, since it uses less digits than its factorization.

128248543444785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3771463632.

The product of its digits is 1101004800, while the sum is 69.

The spelling of 128248543444785 in words is "one hundred twenty-eight trillion, two hundred forty-eight billion, five hundred forty-three million, four hundred forty-four thousand, seven hundred eighty-five".