13686935286181 has 2 divisors, whose sum is σ = 13686935286182. Its totient is φ = 13686935286180.

The previous prime is 13686935286179. The next prime is 13686935286259. The reversal of 13686935286181 is 18168253968631.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13650438622500 + 36496663681 = 3694650^2 + 191041^2 .

It is a cyclic number.

It is not a de Polignac number, because 13686935286181 - 2¹ = 13686935286179 is a prime.

It is a super-2 number, since 2×13686935286181² (a number of 27 digits) contains 22 as substring.

Together with 13686935286179, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13686935286151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6843467643090 + 6843467643091.

It is an arithmetic number, because the mean of its divisors is an integer number (6843467643091).

Almost surely, 2^{13686935286181} is an apocalyptic number.

It is an amenable number.

13686935286181 is a deficient number, since it is larger than the sum of its proper divisors (1).

13686935286181 is an equidigital number, since it uses as much as digits as its factorization.

13686935286181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 89579520, while the sum is 67.

The spelling of 13686935286181 in words is "thirteen trillion, six hundred eighty-six billion, nine hundred thirty-five million, two hundred eighty-six thousand, one hundred eighty-one".