128620046688 has 72 divisors (see below), whose sum is σ = 392750514072. Its totient is φ = 36748583424.

The previous prime is 128620046647. The next prime is 128620046693. The reversal of 128620046688 is 886640026821.

It is a super-3 number, since 3×128620046688³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 128620046688.

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, 13666645 + ... + 13676052.

It is an arithmetic number, because the mean of its divisors is an integer number (5454868251).

Almost surely, 2^128620046688 is an apocalyptic number.

It is an amenable number.

128620046688 is an abundant number, since it is smaller than the sum of its proper divisors (264130467384).

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

128620046688 is a wasteful number, since it uses less digits than its factorization.

128620046688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27342724 (or 27342709 counting only the distinct ones).

The product of its (nonzero) digits is 1769472, while the sum is 51.

The spelling of 128620046688 in words is "one hundred twenty-eight billion, six hundred twenty million, forty-six thousand, six hundred eighty-eight".