8171661326360 has 128 divisors (see below), whose sum is σ = 21269365931520. Its totient is φ = 2767520120832.

The previous prime is 8171661326357. The next prime is 8171661326419. The reversal of 8171661326360 is 636231661718.

It is a junction number, because it is equal to n+sod(n) for n = 8171661326299 and 8171661326308.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 169558187 + ... + 169606373.

It is an arithmetic number, because the mean of its divisors is an integer number (166166921340).

Almost surely, 2^{8171661326360} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8171661326360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10634682965760).

8171661326360 is an abundant number, since it is smaller than the sum of its proper divisors (13097704605160).

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

8171661326360 is a wasteful number, since it uses less digits than its factorization.

8171661326360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55585 (or 55581 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 8171661326360 in words is "eight trillion, one hundred seventy-one billion, six hundred sixty-one million, three hundred twenty-six thousand, three hundred sixty".