12134450257 has 4 divisors (see below), whose sum is σ = 12177633636. Its totient is φ = 12091266880.

The previous prime is 12134450243. The next prime is 12134450299. The reversal of 12134450257 is 75205443121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75205443121 = 1567 ⋅47993263.

It can be written as a sum of positive squares in 2 ways, for example, as 6260607376 + 5873842881 = 79124^2 + 76641^2 .

It is a cyclic number.

It is not a de Polignac number, because 12134450257 - 2¹⁵ = 12134417489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12134450057) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 21591268 + ... + 21591829.

It is an arithmetic number, because the mean of its divisors is an integer number (3044408409).

Almost surely, 2^12134450257 is an apocalyptic number.

It is an amenable number.

12134450257 is a deficient number, since it is larger than the sum of its proper divisors (43183379).

12134450257 is an equidigital number, since it uses as much as digits as its factorization.

12134450257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43183378.

The product of its (nonzero) digits is 33600, while the sum is 34.

Adding to 12134450257 its reverse (75205443121), we get a palindrome (87339893378).

The spelling of 12134450257 in words is "twelve billion, one hundred thirty-four million, four hundred fifty thousand, two hundred fifty-seven".