12711138528 has 48 divisors (see below), whose sum is σ = 36400081536. Its totient is φ = 3851859840.

The previous prime is 12711138511. The next prime is 12711138551. The reversal of 12711138528 is 82583111721.

It is a tau number, because it is divible by the number of its divisors (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6017476 + ... + 6019587.

It is an arithmetic number, because the mean of its divisors is an integer number (758335032).

Almost surely, 2^12711138528 is an apocalyptic number.

It is an amenable number.

12711138528 is an abundant number, since it is smaller than the sum of its proper divisors (23688943008).

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

12711138528 is a wasteful number, since it uses less digits than its factorization.

12711138528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12037087 (or 12037079 counting only the distinct ones).

The product of its digits is 26880, while the sum is 39.

The spelling of 12711138528 in words is "twelve billion, seven hundred eleven million, one hundred thirty-eight thousand, five hundred twenty-eight".