8146686866418 has 48 divisors (see below), whose sum is σ = 17668910839320. Its totient is φ = 2712831153408.

The previous prime is 8146686866413. The next prime is 8146686866447.

8146686866418 is a `hidden beast` number, since 8 + 1 + 466 + 8 + 68 + 66 + 41 + 8 = 666.

8146686866418 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 8144419868649 + 2266997769 = 2853843^2 + 47613^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8146686866413) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 252696196 + ... + 252728432.

Almost surely, 2^{8146686866418} is an apocalyptic number.

8146686866418 is an abundant number, since it is smaller than the sum of its proper divisors (9522223972902).

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

8146686866418 is a wasteful number, since it uses less digits than its factorization.

8146686866418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45931 (or 45928 counting only the distinct ones).

The product of its digits is 509607936, while the sum is 72.

The spelling of 8146686866418 in words is "eight trillion, one hundred forty-six billion, six hundred eighty-six million, eight hundred sixty-six thousand, four hundred eighteen".