128023384885 has 16 divisors (see below), whose sum is σ = 167601297600. Its totient is φ = 93104000640.

The previous prime is 128023384873. The next prime is 128023384889. The reversal of 128023384885 is 588483320821.

It is not a de Polignac number, because 128023384885 - 2²⁵ = 127989830453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128023384889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2209849 + ... + 2267041.

It is an arithmetic number, because the mean of its divisors is an integer number (10475081100).

Almost surely, 2^128023384885 is an apocalyptic number.

It is an amenable number.

128023384885 is a deficient number, since it is larger than the sum of its proper divisors (39577912715).

128023384885 is a wasteful number, since it uses less digits than its factorization.

128023384885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97908.

The product of its (nonzero) digits is 2949120, while the sum is 52.

The spelling of 128023384885 in words is "one hundred twenty-eight billion, twenty-three million, three hundred eighty-four thousand, eight hundred eighty-five".