12964431481 has 4 divisors (see below), whose sum is σ = 13646770000. Its totient is φ = 12282092964.

The previous prime is 12964431391. The next prime is 12964431499. The reversal of 12964431481 is 18413446921.

12964431481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18413446921 = 557 ⋅33058253.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12964431481 is a prime.

It is a super-2 number, since 2×12964431481² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12964431581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 341169231 + ... + 341169268.

It is an arithmetic number, because the mean of its divisors is an integer number (3411692500).

Almost surely, 2^12964431481 is an apocalyptic number.

It is an amenable number.

12964431481 is a deficient number, since it is larger than the sum of its proper divisors (682338519).

12964431481 is an equidigital number, since it uses as much as digits as its factorization.

12964431481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682338518.

The product of its digits is 165888, while the sum is 43.

The spelling of 12964431481 in words is "twelve billion, nine hundred sixty-four million, four hundred thirty-one thousand, four hundred eighty-one".