12867266647 has 16 divisors (see below), whose sum is σ = 13223024640. Its totient is φ = 12517176672.

The previous prime is 12867266623. The next prime is 12867266669. The reversal of 12867266647 is 74666276821.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12867266647 - 2²⁷ = 12733048919 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 (12867261647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2600658 + ... + 2605600.

It is an arithmetic number, because the mean of its divisors is an integer number (826439040).

Almost surely, 2^12867266647 is an apocalyptic number.

12867266647 is a deficient number, since it is larger than the sum of its proper divisors (355757993).

12867266647 is an equidigital number, since it uses as much as digits as its factorization.

12867266647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5502.

The product of its digits is 8128512, while the sum is 55.

The spelling of 12867266647 in words is "twelve billion, eight hundred sixty-seven million, two hundred sixty-six thousand, six hundred forty-seven".