12134771136 has 224 divisors, whose sum is σ = 37278259200. Its totient is φ = 3865881600.

The previous prime is 12134771123. The next prime is 12134771141. The reversal of 12134771136 is 63117743121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 12134771136.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5160361 + ... + 5162711.

It is an arithmetic number, because the mean of its divisors is an integer number (166420800).

Almost surely, 2^12134771136 is an apocalyptic number.

12134771136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12134771136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18639129600).

12134771136 is an abundant number, since it is smaller than the sum of its proper divisors (25143488064).

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

12134771136 is a wasteful number, since it uses less digits than its factorization.

12134771136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2504 (or 2488 counting only the distinct ones).

The product of its digits is 21168, while the sum is 36.

The spelling of 12134771136 in words is "twelve billion, one hundred thirty-four million, seven hundred seventy-one thousand, one hundred thirty-six".