8167041661 has 2 divisors, whose sum is σ = 8167041662. Its totient is φ = 8167041660.

The previous prime is 8167041613. The next prime is 8167041679. The reversal of 8167041661 is 1661407618.

8167041661 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8155173636 + 11868025 = 90306^2 + 3445^2 .

It is a cyclic number.

It is not a de Polignac number, because 8167041661 - 2¹¹ = 8167039613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8167041601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4083520830 + 4083520831.

It is an arithmetic number, because the mean of its divisors is an integer number (4083520831).

Almost surely, 2^8167041661 is an apocalyptic number.

It is an amenable number.

8167041661 is a deficient number, since it is larger than the sum of its proper divisors (1).

8167041661 is an equidigital number, since it uses as much as digits as its factorization.

8167041661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 8167041661 is about 90371.6861688438. The cubic root of 8167041661 is about 2013.8243617597.

The spelling of 8167041661 in words is "eight billion, one hundred sixty-seven million, forty-one thousand, six hundred sixty-one".