8168656763131 has 2 divisors, whose sum is σ = 8168656763132. Its totient is φ = 8168656763130.

The previous prime is 8168656763117. The next prime is 8168656763147. The reversal of 8168656763131 is 1313676568618.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8168656763131 - 2¹³ = 8168656754939 is a prime.

It is a super-2 number, since 2×8168656763131² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8168656763131.

It is not a weakly prime, because it can be changed into another prime (8168657763131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4084328381565 + 4084328381566.

It is an arithmetic number, because the mean of its divisors is an integer number (4084328381566).

Almost surely, 2^{8168656763131} is an apocalyptic number.

8168656763131 is a deficient number, since it is larger than the sum of its proper divisors (1).

8168656763131 is an equidigital number, since it uses as much as digits as its factorization.

8168656763131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26127360, while the sum is 61.

The spelling of 8168656763131 in words is "eight trillion, one hundred sixty-eight billion, six hundred fifty-six million, seven hundred sixty-three thousand, one hundred thirty-one".