12631329555 has 24 divisors (see below), whose sum is σ = 21884343408. Its totient is φ = 6218499456.

The previous prime is 12631329551. The next prime is 12631329559. The reversal of 12631329555 is 55592313621.

12631329555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12631329551) and next prime (12631329559).

It is not a de Polignac number, because 12631329555 - 2² = 12631329551 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12631329551) 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 23 ways as a sum of consecutive naturals, for example, 2488852 + ... + 2493921.

It is an arithmetic number, because the mean of its divisors is an integer number (911847642).

Almost surely, 2^12631329555 is an apocalyptic number.

12631329555 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12631329555 is a deficient number, since it is larger than the sum of its proper divisors (9253013853).

12631329555 is a wasteful number, since it uses less digits than its factorization.

12631329555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4982807 (or 4982794 counting only the distinct ones).

The product of its digits is 243000, while the sum is 42.

The spelling of 12631329555 in words is "twelve billion, six hundred thirty-one million, three hundred twenty-nine thousand, five hundred fifty-five".