128216628795 has 48 divisors (see below), whose sum is σ = 222992225280. Its totient is φ = 62862890496.

The previous prime is 128216628751. The next prime is 128216628833. The reversal of 128216628795 is 597826612821.

It is not a de Polignac number, because 128216628795 - 2⁶ = 128216628731 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 157515 + ... + 530324.

It is an arithmetic number, because the mean of its divisors is an integer number (4645671360).

Almost surely, 2^128216628795 is an apocalyptic number.

128216628795 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128216628795 is a deficient number, since it is larger than the sum of its proper divisors (94775596485).

128216628795 is a wasteful number, since it uses less digits than its factorization.

128216628795 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687924 (or 687907 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 57.

The spelling of 128216628795 in words is "one hundred twenty-eight billion, two hundred sixteen million, six hundred twenty-eight thousand, seven hundred ninety-five".