13125666163 has 2 divisors, whose sum is σ = 13125666164. Its totient is φ = 13125666162.

The previous prime is 13125666161. The next prime is 13125666181. The reversal of 13125666163 is 36166652131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13125666163 - 2¹ = 13125666161 is a prime.

It is a super-2 number, since 2×13125666163² (a number of 21 digits) contains 22 as substring.

Together with 13125666161, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (13125666161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6562833081 + 6562833082.

It is an arithmetic number, because the mean of its divisors is an integer number (6562833082).

Almost surely, 2^13125666163 is an apocalyptic number.

13125666163 is a deficient number, since it is larger than the sum of its proper divisors (1).

13125666163 is an equidigital number, since it uses as much as digits as its factorization.

13125666163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 116640, while the sum is 40.

The spelling of 13125666163 in words is "thirteen billion, one hundred twenty-five million, six hundred sixty-six thousand, one hundred sixty-three".