128331603020838 has 32 divisors (see below), whose sum is σ = 293439528562176. Its totient is φ = 36652403513088.

The previous prime is 128331603020749. The next prime is 128331603020909. The reversal of 128331603020838 is 838020306133821.

128331603020838 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 573585931 + ... + 573809622.

It is an arithmetic number, because the mean of its divisors is an integer number (9169985267568).

Almost surely, 2^{128331603020838} is an apocalyptic number.

128331603020838 is an abundant number, since it is smaller than the sum of its proper divisors (165107925541338).

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

128331603020838 is a wasteful number, since it uses less digits than its factorization.

128331603020838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147398228.

The product of its (nonzero) digits is 995328, while the sum is 48.

The spelling of 128331603020838 in words is "one hundred twenty-eight trillion, three hundred thirty-one billion, six hundred three million, twenty thousand, eight hundred thirty-eight".