12714731521 has 4 divisors (see below), whose sum is σ = 12717750852. Its totient is φ = 12711712192.

The previous prime is 12714731503. The next prime is 12714731527. The reversal of 12714731521 is 12513741721.

12714731521 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.

It can be written as a sum of positive squares in 2 ways, for example, as 9891297025 + 2823434496 = 99455^2 + 53136^2 .

It is a cyclic number.

It is not a de Polignac number, because 12714731521 - 2⁹ = 12714731009 is a prime.

It is a super-2 number, since 2×12714731521² (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 (12714731527) 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, 1503340 + ... + 1511773.

It is an arithmetic number, because the mean of its divisors is an integer number (3179437713).

Almost surely, 2^12714731521 is an apocalyptic number.

It is an amenable number.

12714731521 is a deficient number, since it is larger than the sum of its proper divisors (3019331).

12714731521 is an equidigital number, since it uses as much as digits as its factorization.

12714731521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3019330.

The product of its digits is 11760, while the sum is 34.

The spelling of 12714731521 in words is "twelve billion, seven hundred fourteen million, seven hundred thirty-one thousand, five hundred twenty-one".