12918363930403 has 4 divisors (see below), whose sum is σ = 13233445977528. Its totient is φ = 12603281883280.

The previous prime is 12918363930377. The next prime is 12918363930431. The reversal of 12918363930403 is 30403936381921.

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 12918363930403 - 2⁵ = 12918363930371 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12918363930203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157541023501 + ... + 157541023582.

It is an arithmetic number, because the mean of its divisors is an integer number (3308361494382).

Almost surely, 2^{12918363930403} is an apocalyptic number.

12918363930403 is a deficient number, since it is larger than the sum of its proper divisors (315082047125).

12918363930403 is an equidigital number, since it uses as much as digits as its factorization.

12918363930403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315082047124.

The product of its (nonzero) digits is 2519424, while the sum is 52.

The spelling of 12918363930403 in words is "twelve trillion, nine hundred eighteen billion, three hundred sixty-three million, nine hundred thirty thousand, four hundred three".