8113685771 has 2 divisors, whose sum is σ = 8113685772. Its totient is φ = 8113685770.

The previous prime is 8113685747. The next prime is 8113685807. The reversal of 8113685771 is 1775863118.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8113685771 - 2³⁰ = 7039943947 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (8113985771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4056842885 + 4056842886.

It is an arithmetic number, because the mean of its divisors is an integer number (4056842886).

Almost surely, 2^8113685771 is an apocalyptic number.

8113685771 is a deficient number, since it is larger than the sum of its proper divisors (1).

8113685771 is an equidigital number, since it uses as much as digits as its factorization.

8113685771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 282240, while the sum is 47.

The square root of 8113685771 is about 90075.9999722457. Note that the first 4 decimals coincide. The cubic root of 8113685771 is about 2009.4292886435.

The spelling of 8113685771 in words is "eight billion, one hundred thirteen million, six hundred eighty-five thousand, seven hundred seventy-one".