12518431171 has 2 divisors, whose sum is σ = 12518431172. Its totient is φ = 12518431170.

The previous prime is 12518431139. The next prime is 12518431229. The reversal of 12518431171 is 17113481521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12518431171 - 2⁵ = 12518431139 is a prime.

It is a super-2 number, since 2×12518431171² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12518431271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6259215585 + 6259215586.

It is an arithmetic number, because the mean of its divisors is an integer number (6259215586).

Almost surely, 2^12518431171 is an apocalyptic number.

12518431171 is a deficient number, since it is larger than the sum of its proper divisors (1).

12518431171 is an equidigital number, since it uses as much as digits as its factorization.

12518431171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6720, while the sum is 34.

The spelling of 12518431171 in words is "twelve billion, five hundred eighteen million, four hundred thirty-one thousand, one hundred seventy-one".