8489548079721 has 12 divisors (see below), whose sum is σ = 12470522603760. Its totient is φ = 5563771622520.

The previous prime is 8489548079717. The next prime is 8489548079743. The reversal of 8489548079721 is 1279708459848.

8489548079721 is a `hidden beast` number, since 8 + 4 + 8 + 9 + 5 + 480 + 79 + 72 + 1 = 666.

It is not a de Polignac number, because 8489548079721 - 2² = 8489548079717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8489548079721.

It is not an unprimeable number, because it can be changed into a prime (8489548072721) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 7993924215 + ... + 7993925276.

It is an arithmetic number, because the mean of its divisors is an integer number (1039210216980).

Almost surely, 2^{8489548079721} is an apocalyptic number.

It is an amenable number.

8489548079721 is a deficient number, since it is larger than the sum of its proper divisors (3980974524039).

8489548079721 is a wasteful number, since it uses less digits than its factorization.

8489548079721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15987849556 (or 15987849553 counting only the distinct ones).

The product of its (nonzero) digits is 325140480, while the sum is 72.

The spelling of 8489548079721 in words is "eight trillion, four hundred eighty-nine billion, five hundred forty-eight million, seventy-nine thousand, seven hundred twenty-one".