8115461617 has 2 divisors, whose sum is σ = 8115461618. Its totient is φ = 8115461616.

The previous prime is 8115461603. The next prime is 8115461687. The reversal of 8115461617 is 7161645118.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5841697761 + 2273763856 = 76431^2 + 47684^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8115461617 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8115461617.

It is not a weakly prime, because it can be changed into another prime (8115461687) 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, 4057730808 + 4057730809.

It is an arithmetic number, because the mean of its divisors is an integer number (4057730809).

Almost surely, 2^8115461617 is an apocalyptic number.

It is an amenable number.

8115461617 is a deficient number, since it is larger than the sum of its proper divisors (1).

8115461617 is an equidigital number, since it uses as much as digits as its factorization.

8115461617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 40.

The square root of 8115461617 is about 90085.8569199405. The cubic root of 8115461617 is about 2009.5758795088.

The spelling of 8115461617 in words is "eight billion, one hundred fifteen million, four hundred sixty-one thousand, six hundred seventeen".