12631887773 has 4 divisors (see below), whose sum is σ = 13067470140. Its totient is φ = 12196305408.

The previous prime is 12631887739. The next prime is 12631887817. The reversal of 12631887773 is 37778813621.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4838176249 + 7793711524 = 69557^2 + 88282^2 .

It is a cyclic number.

It is not a de Polignac number, because 12631887773 - 2⁸ = 12631887517 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12631887703) 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, 217791140 + ... + 217791197.

It is an arithmetic number, because the mean of its divisors is an integer number (3266867535).

Almost surely, 2^12631887773 is an apocalyptic number.

It is an amenable number.

12631887773 is a deficient number, since it is larger than the sum of its proper divisors (435582367).

12631887773 is an equidigital number, since it uses as much as digits as its factorization.

12631887773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 435582366.

The product of its digits is 2370816, while the sum is 53.

The spelling of 12631887773 in words is "twelve billion, six hundred thirty-one million, eight hundred eighty-seven thousand, seven hundred seventy-three".