12664316564043 has 4 divisors (see below), whose sum is σ = 16885755418728. Its totient is φ = 8442877709360.

The previous prime is 12664316564033. The next prime is 12664316564047. The reversal of 12664316564043 is 34046561346621.

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 12664316564043 - 2⁹ = 12664316563531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12664316564047) 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, 2110719427338 + ... + 2110719427343.

It is an arithmetic number, because the mean of its divisors is an integer number (4221438854682).

Almost surely, 2^{12664316564043} is an apocalyptic number.

12664316564043 is a deficient number, since it is larger than the sum of its proper divisors (4221438854685).

12664316564043 is an equidigital number, since it uses as much as digits as its factorization.

12664316564043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4221438854684.

The product of its (nonzero) digits is 7464960, while the sum is 51.

The spelling of 12664316564043 in words is "twelve trillion, six hundred sixty-four billion, three hundred sixteen million, five hundred sixty-four thousand, forty-three".