12723148136 has 16 divisors (see below), whose sum is σ = 23857221600. Its totient is φ = 6361222384.

The previous prime is 12723148133. The next prime is 12723148159. The reversal of 12723148136 is 63184132721.

It is a self number, because there is not a number n which added to its sum of digits gives 12723148136.

It is not an unprimeable number, because it can be changed into a prime (12723148133) 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, 172475 + ... + 234933.

It is an arithmetic number, because the mean of its divisors is an integer number (1491076350).

Almost surely, 2^12723148136 is an apocalyptic number.

It is an amenable number.

12723148136 is a deficient number, since it is larger than the sum of its proper divisors (11134073464).

12723148136 is a wasteful number, since it uses less digits than its factorization.

12723148136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87928 (or 87924 counting only the distinct ones).

The product of its digits is 48384, while the sum is 38.

The spelling of 12723148136 in words is "twelve billion, seven hundred twenty-three million, one hundred forty-eight thousand, one hundred thirty-six".