12671329481 has 2 divisors, whose sum is σ = 12671329482. Its totient is φ = 12671329480.

The previous prime is 12671329469. The next prime is 12671329529. The reversal of 12671329481 is 18492317621.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8407239481 + 4264090000 = 91691^2 + 65300^2 .

It is an emirp because it is prime and its reverse (18492317621) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12671329481 - 2⁶ = 12671329417 is a prime.

It is a super-2 number, since 2×12671329481² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (12671329381) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6335664740 + 6335664741.

It is an arithmetic number, because the mean of its divisors is an integer number (6335664741).

Almost surely, 2^12671329481 is an apocalyptic number.

It is an amenable number.

12671329481 is a deficient number, since it is larger than the sum of its proper divisors (1).

12671329481 is an equidigital number, since it uses as much as digits as its factorization.

12671329481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 44.

The spelling of 12671329481 in words is "twelve billion, six hundred seventy-one million, three hundred twenty-nine thousand, four hundred eighty-one".