12131128488 has 16 divisors (see below), whose sum is σ = 30327821280. Its totient is φ = 4043709488.

The previous prime is 12131128423. The next prime is 12131128571. The reversal of 12131128488 is 88482113121.

It is a super-2 number, since 2×12131128488² (a number of 21 digits) contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252731820 + ... + 252731867.

It is an arithmetic number, because the mean of its divisors is an integer number (1895488830).

Almost surely, 2^12131128488 is an apocalyptic number.

It is an amenable number.

12131128488 is an abundant number, since it is smaller than the sum of its proper divisors (18196692792).

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

12131128488 is a wasteful number, since it uses less digits than its factorization.

12131128488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505463696 (or 505463692 counting only the distinct ones).

The product of its digits is 24576, while the sum is 39.

The spelling of 12131128488 in words is "twelve billion, one hundred thirty-one million, one hundred twenty-eight thousand, four hundred eighty-eight".