12440134171 has 2 divisors, whose sum is σ = 12440134172. Its totient is φ = 12440134170.

The previous prime is 12440134153. The next prime is 12440134199. The reversal of 12440134171 is 17143104421.

It is an a-pointer prime, because the next prime (12440134199) can be obtained adding 12440134171 to its sum of digits (28).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12440134171 - 2¹⁵ = 12440101403 is a prime.

It is not a weakly prime, because it can be changed into another prime (12440134771) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6220067085 + 6220067086.

It is an arithmetic number, because the mean of its divisors is an integer number (6220067086).

Almost surely, 2^12440134171 is an apocalyptic number.

12440134171 is a deficient number, since it is larger than the sum of its proper divisors (1).

12440134171 is an equidigital number, since it uses as much as digits as its factorization.

12440134171 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 28.

Adding to 12440134171 its reverse (17143104421), we get a palindrome (29583238592).

It can be divided in two parts, 12440 and 134171, that added together give a triangular number (146611 = T₅₄₁).

The spelling of 12440134171 in words is "twelve billion, four hundred forty million, one hundred thirty-four thousand, one hundred seventy-one".