128286873408488 has 16 divisors (see below), whose sum is σ = 247038911631780. Its totient is φ = 62409830306688.

The previous prime is 128286873408437. The next prime is 128286873408523. The reversal of 128286873408488 is 884804378682821.

It can be written as a sum of positive squares in 2 ways, for example, as 111626451576964 + 16660421831524 = 10565342^2 + 4081718^2 .

It is a super-3 number, since 3×128286873408488³ (a number of 43 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216700799381 + ... + 216700799972.

Almost surely, 2^{128286873408488} is an apocalyptic number.

It is an amenable number.

128286873408488 is a deficient number, since it is larger than the sum of its proper divisors (118752038223292).

128286873408488 is a wasteful number, since it uses less digits than its factorization.

128286873408488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 433401599396 (or 433401599392 counting only the distinct ones).

The product of its (nonzero) digits is 2113929216, while the sum is 77.

The spelling of 128286873408488 in words is "one hundred twenty-eight trillion, two hundred eighty-six billion, eight hundred seventy-three million, four hundred eight thousand, four hundred eighty-eight".