128317555536028 has 12 divisors (see below), whose sum is σ = 224617874364520. Its totient is φ = 64141020003312.

The previous prime is 128317555536011. The next prime is 128317555536029. The reversal of 128317555536028 is 820635555713821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128317555536029) 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, 4439424918 + ... + 4439453821.

Almost surely, 2^{128317555536028} is an apocalyptic number.

It is an amenable number.

128317555536028 is a deficient number, since it is larger than the sum of its proper divisors (96300318828492).

128317555536028 is a wasteful number, since it uses less digits than its factorization.

128317555536028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8878882356 (or 8878882354 counting only the distinct ones).

The product of its (nonzero) digits is 60480000, while the sum is 61.

The spelling of 128317555536028 in words is "one hundred twenty-eight trillion, three hundred seventeen billion, five hundred fifty-five million, five hundred thirty-six thousand, twenty-eight".