12403041318427 has 4 divisors (see below), whose sum is σ = 12445372517760. Its totient is φ = 12360710119096.

The previous prime is 12403041318389. The next prime is 12403041318431. The reversal of 12403041318427 is 72481314030421.

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 12403041318427 - 2¹⁹ = 12403040794139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12403041318427.

It is not an unprimeable number, because it can be changed into a prime (12403041318487) 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, 21165599227 + ... + 21165599812.

It is an arithmetic number, because the mean of its divisors is an integer number (3111343129440).

Almost surely, 2^{12403041318427} is an apocalyptic number.

12403041318427 is a deficient number, since it is larger than the sum of its proper divisors (42331199333).

12403041318427 is an equidigital number, since it uses as much as digits as its factorization.

12403041318427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42331199332.

The product of its (nonzero) digits is 129024, while the sum is 40.

Adding to 12403041318427 its reverse (72481314030421), we get a palindrome (84884355348848).

The spelling of 12403041318427 in words is "twelve trillion, four hundred three billion, forty-one million, three hundred eighteen thousand, four hundred twenty-seven".