8126681567 has 2 divisors, whose sum is σ = 8126681568. Its totient is φ = 8126681566.

The previous prime is 8126681483. The next prime is 8126681579. The reversal of 8126681567 is 7651866218.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8126681567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8126611567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4063340783 + 4063340784.

It is an arithmetic number, because the mean of its divisors is an integer number (4063340784).

Almost surely, 2^8126681567 is an apocalyptic number.

8126681567 is a deficient number, since it is larger than the sum of its proper divisors (1).

8126681567 is an equidigital number, since it uses as much as digits as its factorization.

8126681567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 967680, while the sum is 50.

The square root of 8126681567 is about 90148.1090594806. The cubic root of 8126681567 is about 2010.5015593637.

The spelling of 8126681567 in words is "eight billion, one hundred twenty-six million, six hundred eighty-one thousand, five hundred sixty-seven".