8171343856 has 40 divisors (see below), whose sum is σ = 17062769024. Its totient is φ = 3768526080.

The previous prime is 8171343787. The next prime is 8171343857. The reversal of 8171343856 is 6583431718.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8171343857) 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 7 ways as a sum of consecutive naturals, for example, 273025 + ... + 301471.

Almost surely, 2^8171343856 is an apocalyptic number.

It is an amenable number.

8171343856 is an abundant number, since it is smaller than the sum of its proper divisors (8891425168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8171343856 is a wasteful number, since it uses less digits than its factorization.

8171343856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29849 (or 29843 counting only the distinct ones).

The product of its digits is 483840, while the sum is 46.

The square root of 8171343856 is about 90395.4858164942. The cubic root of 8171343856 is about 2014.1779105967.

The spelling of 8171343856 in words is "eight billion, one hundred seventy-one million, three hundred forty-three thousand, eight hundred fifty-six".