8072166317 has 4 divisors (see below), whose sum is σ = 8077365660. Its totient is φ = 8066966976.

The previous prime is 8072166313. The next prime is 8072166329. The reversal of 8072166317 is 7136612708.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4226430121 + 3845736196 = 65011^2 + 62014^2 .

It is a cyclic number.

It is not a de Polignac number, because 8072166317 - 2² = 8072166313 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8072166313) 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 in 3 ways as a sum of consecutive naturals, for example, 2597342 + ... + 2600447.

It is an arithmetic number, because the mean of its divisors is an integer number (2019341415).

Almost surely, 2^8072166317 is an apocalyptic number.

It is an amenable number.

8072166317 is a deficient number, since it is larger than the sum of its proper divisors (5199343).

8072166317 is a wasteful number, since it uses less digits than its factorization.

8072166317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5199342.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 8072166317 is about 89845.2353605910. The cubic root of 8072166317 is about 2005.9958665792.

The spelling of 8072166317 in words is "eight billion, seventy-two million, one hundred sixty-six thousand, three hundred seventeen".