13164381691 has 2 divisors, whose sum is σ = 13164381692. Its totient is φ = 13164381690.

The previous prime is 13164381677. The next prime is 13164381761. The reversal of 13164381691 is 19618346131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13164381691 - 2²¹ = 13162284539 is a prime.

It is not a weakly prime, because it can be changed into another prime (13164381611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6582190845 + 6582190846.

It is an arithmetic number, because the mean of its divisors is an integer number (6582190846).

Almost surely, 2^13164381691 is an apocalyptic number.

13164381691 is a deficient number, since it is larger than the sum of its proper divisors (1).

13164381691 is an equidigital number, since it uses as much as digits as its factorization.

13164381691 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312, while the sum is 43.

The spelling of 13164381691 in words is "thirteen billion, one hundred sixty-four million, three hundred eighty-one thousand, six hundred ninety-one".