12911626620671 has 4 divisors (see below), whose sum is σ = 12912367876200. Its totient is φ = 12910885365144.

The previous prime is 12911626620667. The next prime is 12911626620707. The reversal of 12911626620671 is 17602662611921.

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 12911626620671 - 2² = 12911626620667 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12911623620671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 370601636 + ... + 370636473.

It is an arithmetic number, because the mean of its divisors is an integer number (3228091969050).

Almost surely, 2^{12911626620671} is an apocalyptic number.

12911626620671 is a deficient number, since it is larger than the sum of its proper divisors (741255529).

12911626620671 is an equidigital number, since it uses as much as digits as its factorization.

12911626620671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 741255528.

The product of its (nonzero) digits is 653184, while the sum is 50.

The spelling of 12911626620671 in words is "twelve trillion, nine hundred eleven billion, six hundred twenty-six million, six hundred twenty thousand, six hundred seventy-one".