8061720889344 has 96 divisors (see below), whose sum is σ = 21701342295360. Its totient is φ = 2661150375936.

The previous prime is 8061720889333. The next prime is 8061720889367. The reversal of 8061720889344 is 4439880271608.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5736727 + ... + 7002390.

It is an arithmetic number, because the mean of its divisors is an integer number (226055648910).

Almost surely, 2^{8061720889344} is an apocalyptic number.

It is an amenable number.

8061720889344 is an abundant number, since it is smaller than the sum of its proper divisors (13639621406016).

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

8061720889344 is a wasteful number, since it uses less digits than its factorization.

8061720889344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12739245 (or 12739225 counting only the distinct ones).

The product of its (nonzero) digits is 18579456, while the sum is 60.

The spelling of 8061720889344 in words is "eight trillion, sixty-one billion, seven hundred twenty million, eight hundred eighty-nine thousand, three hundred forty-four".