12418871631329 has 4 divisors (see below), whose sum is σ = 12427418688276. Its totient is φ = 12410324574384.

The previous prime is 12418871631317. The next prime is 12418871631337. The reversal of 12418871631329 is 92313617881421.

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 5917187605729 + 6501684025600 = 2432527^2 + 2549840^2 .

It is a cyclic number.

It is not a de Polignac number, because 12418871631329 - 2²⁰ = 12418870582753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12418871631629) 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, 4273526294 + ... + 4273529199.

It is an arithmetic number, because the mean of its divisors is an integer number (3106854672069).

Almost surely, 2^{12418871631329} is an apocalyptic number.

It is an amenable number.

12418871631329 is a deficient number, since it is larger than the sum of its proper divisors (8547056947).

12418871631329 is an equidigital number, since it uses as much as digits as its factorization.

12418871631329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8547056946.

The product of its digits is 3483648, while the sum is 56.

The spelling of 12418871631329 in words is "twelve trillion, four hundred eighteen billion, eight hundred seventy-one million, six hundred thirty-one thousand, three hundred twenty-nine".