12494449421 has 6 divisors (see below), whose sum is σ = 13272650730. Its totient is φ = 11759481536.

The previous prime is 12494449391. The next prime is 12494449427.

12494449421 is nontrivially palindromic in base 10.

12494449421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 3 ways, for example, as 1316673796 + 11177775625 = 36286^2 + 105725^2 .

It is not a de Polignac number, because 12494449421 - 2¹⁰ = 12494448397 is a prime.

It is a super-2 number, since 2×12494449421² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12494449427) 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 5 ways as a sum of consecutive naturals, for example, 21616406 + ... + 21616983.

It is an arithmetic number, because the mean of its divisors is an integer number (2212108455).

Almost surely, 2^12494449421 is an apocalyptic number.

It is an amenable number.

12494449421 is a deficient number, since it is larger than the sum of its proper divisors (778201309).

12494449421 is an equidigital number, since it uses as much as digits as its factorization.

12494449421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43233423 (or 43233406 counting only the distinct ones).

The product of its digits is 331776, while the sum is 44.

The spelling of 12494449421 in words is "twelve billion, four hundred ninety-four million, four hundred forty-nine thousand, four hundred twenty-one".