12971264479 has 4 divisors (see below), whose sum is σ = 13026935376. Its totient is φ = 12915593584.

The previous prime is 12971264477. The next prime is 12971264491. The reversal of 12971264479 is 97446217921.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12971264479 - 2¹ = 12971264477 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12971264477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27835099 + ... + 27835564.

It is an arithmetic number, because the mean of its divisors is an integer number (3256733844).

Almost surely, 2^12971264479 is an apocalyptic number.

12971264479 is a deficient number, since it is larger than the sum of its proper divisors (55670897).

12971264479 is an equidigital number, since it uses as much as digits as its factorization.

12971264479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55670896.

The product of its digits is 1524096, while the sum is 52.

The spelling of 12971264479 in words is "twelve billion, nine hundred seventy-one million, two hundred sixty-four thousand, four hundred seventy-nine".