8126681579 has 2 divisors, whose sum is σ = 8126681580. Its totient is φ = 8126681578.

The previous prime is 8126681567. The next prime is 8126681603. The reversal of 8126681579 is 9751866218.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8126681579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8126681579.

It is not a weakly prime, because it can be changed into another prime (8126689579) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4063340789 + 4063340790.

It is an arithmetic number, because the mean of its divisors is an integer number (4063340790).

Almost surely, 2^8126681579 is an apocalyptic number.

8126681579 is a deficient number, since it is larger than the sum of its proper divisors (1).

8126681579 is an equidigital number, since it uses as much as digits as its factorization.

8126681579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 53.

The square root of 8126681579 is about 90148.1091260377. The cubic root of 8126681579 is about 2010.5015603533.

The spelling of 8126681579 in words is "eight billion, one hundred twenty-six million, six hundred eighty-one thousand, five hundred seventy-nine".