8166277901 has 2 divisors, whose sum is σ = 8166277902. Its totient is φ = 8166277900.

The previous prime is 8166277891. The next prime is 8166277907. The reversal of 8166277901 is 1097726618.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5933620900 + 2232657001 = 77030^2 + 47251^2 .

It is a cyclic number.

It is not a de Polignac number, because 8166277901 - 2¹⁴ = 8166261517 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8166277907) 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, 4083138950 + 4083138951.

It is an arithmetic number, because the mean of its divisors is an integer number (4083138951).

Almost surely, 2^8166277901 is an apocalyptic number.

It is an amenable number.

8166277901 is a deficient number, since it is larger than the sum of its proper divisors (1).

8166277901 is an equidigital number, since it uses as much as digits as its factorization.

8166277901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 254016, while the sum is 47.

The square root of 8166277901 is about 90367.4604102605. The cubic root of 8166277901 is about 2013.7615839712.

The spelling of 8166277901 in words is "eight billion, one hundred sixty-six million, two hundred seventy-seven thousand, nine hundred one".