128944315275 has 12 divisors (see below), whose sum is σ = 213187934712. Its totient is φ = 68770301440.

The previous prime is 128944315249. The next prime is 128944315349. The reversal of 128944315275 is 572513449821.

It is not a de Polignac number, because 128944315275 - 2²³ = 128935926667 is a prime.

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 11 ways as a sum of consecutive naturals, for example, 859628694 + ... + 859628843.

It is an arithmetic number, because the mean of its divisors is an integer number (17765661226).

Almost surely, 2^128944315275 is an apocalyptic number.

128944315275 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128944315275 is a deficient number, since it is larger than the sum of its proper divisors (84243619437).

128944315275 is a wasteful number, since it uses less digits than its factorization.

128944315275 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719257550 (or 1719257545 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 51.

The spelling of 128944315275 in words is "one hundred twenty-eight billion, nine hundred forty-four million, three hundred fifteen thousand, two hundred seventy-five".