12514441521 has 24 divisors (see below), whose sum is σ = 17167806592. Its totient is φ = 8108553600.

The previous prime is 12514441501. The next prime is 12514441549.

12514441521 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 12514441521 - 2¹¹ = 12514439473 is a prime.

It is a super-2 number, since 2×12514441521² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12514441501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1362075 + ... + 1371231.

Almost surely, 2^12514441521 is an apocalyptic number.

It is an amenable number.

12514441521 is a deficient number, since it is larger than the sum of its proper divisors (4653365071).

12514441521 is an equidigital number, since it uses as much as digits as its factorization.

12514441521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9513 (or 9472 counting only the distinct ones).

The product of its digits is 6400, while the sum is 30.

The spelling of 12514441521 in words is "twelve billion, five hundred fourteen million, four hundred forty-one thousand, five hundred twenty-one".