128276423805600 has 432 divisors, whose sum is σ = 521528825143872. Its totient is φ = 29060852244480.

The previous prime is 128276423805599. The next prime is 128276423805601. The reversal of 128276423805600 is 6508324672821.

128276423805600 is a `hidden beast` number, since 1 + 2 + 8 + 2 + 7 + 6 + 4 + 23 + 8 + 0 + 5 + 600 = 666.

It is an interprime number because it is at equal distance from previous prime (128276423805599) and next prime (128276423805601).

It is not an unprimeable number, because it can be changed into a prime (128276423805601) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 5566602 + ... + 16957001.

It is an arithmetic number, because the mean of its divisors is an integer number (1207242650796).

Almost surely, 2^{128276423805600} is an apocalyptic number.

128276423805600 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128276423805600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (260764412571936).

128276423805600 is an abundant number, since it is smaller than the sum of its proper divisors (393252401338272).

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

128276423805600 is a wasteful number, since it uses less digits than its factorization.

128276423805600 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22523749 (or 22523733 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 54.

The spelling of 128276423805600 in words is "one hundred twenty-eight trillion, two hundred seventy-six billion, four hundred twenty-three million, eight hundred five thousand, six hundred".