128057768856570 has 128 divisors (see below), whose sum is σ = 353548677035520. Its totient is φ = 29078567239680.

The previous prime is 128057768856541. The next prime is 128057768856617. The reversal of 128057768856570 is 75658867750821.

It is a junction number, because it is equal to n+sod(n) for n = 128057768856492 and 128057768856501.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 45462090 + ... + 48196650.

It is an arithmetic number, because the mean of its divisors is an integer number (2762099039340).

Almost surely, 2^{128057768856570} is an apocalyptic number.

128057768856570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 128057768856570, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (176774338517760).

128057768856570 is an abundant number, since it is smaller than the sum of its proper divisors (225490908178950).

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

128057768856570 is a wasteful number, since it uses less digits than its factorization.

128057768856570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2736040.

The product of its (nonzero) digits is 1580544000, while the sum is 75.

The spelling of 128057768856570 in words is "one hundred twenty-eight trillion, fifty-seven billion, seven hundred sixty-eight million, eight hundred fifty-six thousand, five hundred seventy".