12631819543 has 4 divisors (see below), whose sum is σ = 14436365200. Its totient is φ = 10827273888.

The previous prime is 12631819537. The next prime is 12631819559. The reversal of 12631819543 is 34591813621.

12631819543 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.

It is a cyclic number.

It is not a de Polignac number, because 12631819543 - 2¹³ = 12631811351 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 12631819543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12631819843) 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, 902272818 + ... + 902272831.

It is an arithmetic number, because the mean of its divisors is an integer number (3609091300).

Almost surely, 2^12631819543 is an apocalyptic number.

12631819543 is a deficient number, since it is larger than the sum of its proper divisors (1804545657).

12631819543 is an equidigital number, since it uses as much as digits as its factorization.

12631819543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804545656.

The product of its digits is 155520, while the sum is 43.

The spelling of 12631819543 in words is "twelve billion, six hundred thirty-one million, eight hundred nineteen thousand, five hundred forty-three".