8170450105728 has 32 divisors (see below), whose sum is σ = 21702758094360. Its totient is φ = 2723483368448.

The previous prime is 8170450105633. The next prime is 8170450105789. The reversal of 8170450105728 is 8275010540718.

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10638606525 + ... + 10638607292.

Almost surely, 2^{8170450105728} is an apocalyptic number.

It is an amenable number.

8170450105728 is an abundant number, since it is smaller than the sum of its proper divisors (13532307988632).

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

8170450105728 is a wasteful number, since it uses less digits than its factorization.

8170450105728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21277213834 (or 21277213822 counting only the distinct ones).

The product of its (nonzero) digits is 627200, while the sum is 48.

The spelling of 8170450105728 in words is "eight trillion, one hundred seventy billion, four hundred fifty million, one hundred five thousand, seven hundred twenty-eight".