128247882765 has 32 divisors (see below), whose sum is σ = 212410512000. Its totient is φ = 65997308160.

The previous prime is 128247882671. The next prime is 128247882767. The reversal of 128247882765 is 567288742821.

It is not a de Polignac number, because 128247882765 - 2¹⁸ = 128247620621 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 128247882699 and 128247882708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128247882767) by changing a digit.

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, 578650 + ... + 768980.

It is an arithmetic number, because the mean of its divisors is an integer number (6637828500).

Almost surely, 2^128247882765 is an apocalyptic number.

128247882765 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

128247882765 is a deficient number, since it is larger than the sum of its proper divisors (84162629235).

128247882765 is a wasteful number, since it uses less digits than its factorization.

128247882765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191917.

The product of its digits is 24084480, while the sum is 60.

The spelling of 128247882765 in words is "one hundred twenty-eight billion, two hundred forty-seven million, eight hundred eighty-two thousand, seven hundred sixty-five".