12134721448 has 32 divisors (see below), whose sum is σ = 24111374760. Its totient is φ = 5705625600.

The previous prime is 12134721341. The next prime is 12134721449. The reversal of 12134721448 is 84412743121.

It can be written as a sum of positive squares in 4 ways, for example, as 3983881924 + 8150839524 = 63118^2 + 90282^2 .

It is not an unprimeable number, because it can be changed into a prime (12134721449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 126190 + ... + 200482.

Almost surely, 2^12134721448 is an apocalyptic number.

It is an amenable number.

12134721448 is a deficient number, since it is larger than the sum of its proper divisors (11976653312).

12134721448 is a wasteful number, since it uses less digits than its factorization.

12134721448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75517 (or 75513 counting only the distinct ones).

The product of its digits is 43008, while the sum is 37.

The spelling of 12134721448 in words is "twelve billion, one hundred thirty-four million, seven hundred twenty-one thousand, four hundred forty-eight".