12134678784 has 36 divisors (see below), whose sum is σ = 32295944016. Its totient is φ = 4044892672.

The previous prime is 12134678741. The next prime is 12134678789. The reversal of 12134678784 is 48787643121.

It is not an unprimeable number, because it can be changed into a prime (12134678789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7899414 + ... + 7900949.

It is an arithmetic number, because the mean of its divisors is an integer number (897109556).

Almost surely, 2^12134678784 is an apocalyptic number.

It is an amenable number.

12134678784 is an abundant number, since it is smaller than the sum of its proper divisors (20161265232).

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

12134678784 is an equidigital number, since it uses as much as digits as its factorization.

12134678784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15800382 (or 15800368 counting only the distinct ones).

The product of its digits is 1806336, while the sum is 51.

The spelling of 12134678784 in words is "twelve billion, one hundred thirty-four million, six hundred seventy-eight thousand, seven hundred eighty-four".