128504804297 has 16 divisors (see below), whose sum is σ = 131535444240. Its totient is φ = 125497562112.

The previous prime is 128504804293. The next prime is 128504804333. The reversal of 128504804297 is 792408405821.

It can be written as a sum of positive squares in 8 ways, for example, as 315027001 + 128189777296 = 17749^2 + 358036^2 .

It is a cyclic number.

It is not a de Polignac number, because 128504804297 - 2² = 128504804293 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128504804293) 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, 16570973 + ... + 16578725.

It is an arithmetic number, because the mean of its divisors is an integer number (8220965265).

Almost surely, 2^128504804297 is an apocalyptic number.

It is an amenable number.

128504804297 is a deficient number, since it is larger than the sum of its proper divisors (3030639943).

128504804297 is a wasteful number, since it uses less digits than its factorization.

128504804297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9212.

The product of its (nonzero) digits is 1290240, while the sum is 50.

The spelling of 128504804297 in words is "one hundred twenty-eight billion, five hundred four million, eight hundred four thousand, two hundred ninety-seven".