128688883056 has 80 divisors (see below), whose sum is σ = 369477542400. Its totient is φ = 42885519552.

The previous prime is 128688883051. The next prime is 128688883061. The reversal of 128688883056 is 650388886821.

It is an interprime number because it is at equal distance from previous prime (128688883051) and next prime (128688883061).

It is a junction number, because it is equal to n+sod(n) for n = 128688882984 and 128688883002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128688883051) 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, 1787305 + ... + 1857911.

It is an arithmetic number, because the mean of its divisors is an integer number (4618469280).

Almost surely, 2^128688883056 is an apocalyptic number.

128688883056 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

128688883056 is an abundant number, since it is smaller than the sum of its proper divisors (240788659344).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

128688883056 is a wasteful number, since it uses less digits than its factorization.

128688883056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74843 (or 74831 counting only the distinct ones).

The product of its (nonzero) digits is 35389440, while the sum is 63.

The spelling of 128688883056 in words is "one hundred twenty-eight billion, six hundred eighty-eight million, eight hundred eighty-three thousand, fifty-six".