128707232052436 has 12 divisors (see below), whose sum is σ = 229487423188212. Its totient is φ = 63139396855808.

The previous prime is 128707232052353. The next prime is 128707232052439. The reversal of 128707232052436 is 634250232707821.

It can be written as a sum of positive squares in 2 ways, for example, as 94803326890000 + 33903905162436 = 9736700^2 + 5822706^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128707232052439) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 303554792365 + ... + 303554792788.

It is an arithmetic number, because the mean of its divisors is an integer number (19123951932351).

Almost surely, 2^{128707232052436} is an apocalyptic number.

It is an amenable number.

128707232052436 is a deficient number, since it is larger than the sum of its proper divisors (100780191135776).

128707232052436 is a wasteful number, since it uses less digits than its factorization.

128707232052436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607109585210 (or 607109585208 counting only the distinct ones).

The product of its (nonzero) digits is 6773760, while the sum is 52.

The spelling of 128707232052436 in words is "one hundred twenty-eight trillion, seven hundred seven billion, two hundred thirty-two million, fifty-two thousand, four hundred thirty-six".