13127664691 has 2 divisors, whose sum is σ = 13127664692. Its totient is φ = 13127664690.

The previous prime is 13127664659. The next prime is 13127664749. The reversal of 13127664691 is 19646672131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13127664691 - 2⁵ = 13127664659 is a prime.

It is not a weakly prime, because it can be changed into another prime (13127664791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6563832345 + 6563832346.

It is an arithmetic number, because the mean of its divisors is an integer number (6563832346).

Almost surely, 2^13127664691 is an apocalyptic number.

13127664691 is a deficient number, since it is larger than the sum of its proper divisors (1).

13127664691 is an equidigital number, since it uses as much as digits as its factorization.

13127664691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The spelling of 13127664691 in words is "thirteen billion, one hundred twenty-seven million, six hundred sixty-four thousand, six hundred ninety-one".