128803651128 has 48 divisors (see below), whose sum is σ = 360096235200. Its totient is φ = 41549564160.

The previous prime is 128803651111. The next prime is 128803651133. The reversal of 128803651128 is 821156308821.

128803651128 is a `hidden beast` number, since 1 + 2 + 8 + 80 + 36 + 511 + 28 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28851633 + ... + 28856096.

It is an arithmetic number, because the mean of its divisors is an integer number (7502004900).

Almost surely, 2^128803651128 is an apocalyptic number.

128803651128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

128803651128 is an abundant number, since it is smaller than the sum of its proper divisors (231292584072).

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

128803651128 is a wasteful number, since it uses less digits than its factorization.

128803651128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57707772 (or 57707765 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 45.

Adding to 128803651128 its reverse (821156308821), we get a palindrome (949959959949).

The spelling of 128803651128 in words is "one hundred twenty-eight billion, eight hundred three million, six hundred fifty-one thousand, one hundred twenty-eight".