12134157872 has 80 divisors (see below), whose sum is σ = 25218385920. Its totient is φ = 5639155200.

The previous prime is 12134157821. The next prime is 12134157899. The reversal of 12134157872 is 27875143121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4811972 + ... + 4814492.

It is an arithmetic number, because the mean of its divisors is an integer number (315229824).

Almost surely, 2^12134157872 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12134157872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12609192960).

12134157872 is an abundant number, since it is smaller than the sum of its proper divisors (13084228048).

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

12134157872 is a wasteful number, since it uses less digits than its factorization.

12134157872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2842 (or 2836 counting only the distinct ones).

The product of its digits is 94080, while the sum is 41.

The spelling of 12134157872 in words is "twelve billion, one hundred thirty-four million, one hundred fifty-seven thousand, eight hundred seventy-two".