8171312965 has 32 divisors (see below), whose sum is σ = 10126964736. Its totient is φ = 6326886720.

The previous prime is 8171312927. The next prime is 8171312987. The reversal of 8171312965 is 5692131718.

It is not a de Polignac number, because 8171312965 - 2⁹ = 8171312453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11963514 + ... + 11964196.

It is an arithmetic number, because the mean of its divisors is an integer number (316467648).

Almost surely, 2^8171312965 is an apocalyptic number.

It is an amenable number.

8171312965 is a deficient number, since it is larger than the sum of its proper divisors (1955651771).

8171312965 is a wasteful number, since it uses less digits than its factorization.

8171312965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1329.

The product of its digits is 90720, while the sum is 43.

The square root of 8171312965 is about 90395.3149504995. The cubic root of 8171312965 is about 2014.1753724565.

The spelling of 8171312965 in words is "eight billion, one hundred seventy-one million, three hundred twelve thousand, nine hundred sixty-five".