12686161355316 has 18 divisors (see below), whose sum is σ = 32067796759362. Its totient is φ = 4228720451760.

The previous prime is 12686161355311. The next prime is 12686161355321. The reversal of 12686161355316 is 61355316168621.

12686161355316 is a `hidden beast` number, since 1 + 2 + 6 + 8 + 6 + 1 + 613 + 5 + 5 + 3 + 16 = 666.

It is an interprime number because it is at equal distance from previous prime (12686161355311) and next prime (12686161355321).

It can be written as a sum of positive squares in only one way, i.e., 10518800292900 + 2167361062416 = 3243270^2 + 1472196^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×12686161355316² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12686161355311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 176196685455 + ... + 176196685526.

It is an arithmetic number, because the mean of its divisors is an integer number (1781544264409).

Almost surely, 2^{12686161355316} is an apocalyptic number.

It is an amenable number.

12686161355316 is an abundant number, since it is smaller than the sum of its proper divisors (19381635404046).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12686161355316 is a wasteful number, since it uses less digits than its factorization.

12686161355316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 352393370991 (or 352393370986 counting only the distinct ones).

The product of its digits is 4665600, while the sum is 54.

The spelling of 12686161355316 in words is "twelve trillion, six hundred eighty-six billion, one hundred sixty-one million, three hundred fifty-five thousand, three hundred sixteen".