8268636063861 has 16 divisors (see below), whose sum is σ = 12250215400320. Its totient is φ = 5512251155040.

The previous prime is 8268636063847. The next prime is 8268636063907. The reversal of 8268636063861 is 1683606368628.

8268636063861 is a `hidden beast` number, since 8 + 268 + 6 + 360 + 6 + 3 + 8 + 6 + 1 = 666.

It is not a de Polignac number, because 8268636063861 - 2⁷ = 8268636063733 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8268636063461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3922680 + ... + 5650193.

It is an arithmetic number, because the mean of its divisors is an integer number (765638462520).

Almost surely, 2^{8268636063861} is an apocalyptic number.

It is an amenable number.

8268636063861 is a deficient number, since it is larger than the sum of its proper divisors (3981579336459).

8268636063861 is a wasteful number, since it uses less digits than its factorization.

8268636063861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9604873 (or 9604867 counting only the distinct ones).

The product of its (nonzero) digits is 71663616, while the sum is 63.

The spelling of 8268636063861 in words is "eight trillion, two hundred sixty-eight billion, six hundred thirty-six million, sixty-three thousand, eight hundred sixty-one".