12631344118 has 16 divisors (see below), whose sum is σ = 18989114976. Its totient is φ = 6301653120.

The previous prime is 12631344073. The next prime is 12631344137. The reversal of 12631344118 is 81144313621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3573480 + ... + 3577012.

It is an arithmetic number, because the mean of its divisors is an integer number (1186819686).

Almost surely, 2^12631344118 is an apocalyptic number.

12631344118 is a deficient number, since it is larger than the sum of its proper divisors (6357770858).

12631344118 is a wasteful number, since it uses less digits than its factorization.

12631344118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6999.

The product of its digits is 13824, while the sum is 34.

Adding to 12631344118 its reverse (81144313621), we get a palindrome (93775657739).

The spelling of 12631344118 in words is "twelve billion, six hundred thirty-one million, three hundred forty-four thousand, one hundred eighteen".