12135988128 has 96 divisors (see below), whose sum is σ = 35874220032. Its totient is φ = 3558931200.

The previous prime is 12135988103. The next prime is 12135988133. The reversal of 12135988128 is 82188953121.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 152626 + ... + 218097.

It is an arithmetic number, because the mean of its divisors is an integer number (373689792).

Almost surely, 2^12135988128 is an apocalyptic number.

It is an amenable number.

12135988128 is an abundant number, since it is smaller than the sum of its proper divisors (23738231904).

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

12135988128 is a wasteful number, since it uses less digits than its factorization.

12135988128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370778 (or 370770 counting only the distinct ones).

The product of its digits is 276480, while the sum is 48.

The spelling of 12135988128 in words is "twelve billion, one hundred thirty-five million, nine hundred eighty-eight thousand, one hundred twenty-eight".