12401345449 has 4 divisors (see below), whose sum is σ = 12401726800. Its totient is φ = 12400964100.

The previous prime is 12401345447. The next prime is 12401345461. The reversal of 12401345449 is 94454310421.

12401345449 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: 94454310421 = 70111 ⋅1347211.

It is a cyclic number.

It is not a de Polignac number, because 12401345449 - 2¹ = 12401345447 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12401345441) 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, 136827 + ... + 208624.

It is an arithmetic number, because the mean of its divisors is an integer number (3100431700).

Almost surely, 2^12401345449 is an apocalyptic number.

It is an amenable number.

12401345449 is a deficient number, since it is larger than the sum of its proper divisors (381351).

12401345449 is an equidigital number, since it uses as much as digits as its factorization.

12401345449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381350.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 12401345449 in words is "twelve billion, four hundred one million, three hundred forty-five thousand, four hundred forty-nine".