8016579720 has 128 divisors (see below), whose sum is σ = 27052128000. Its totient is φ = 2137731264.

The previous prime is 8016579719. The next prime is 8016579751. The reversal of 8016579720 is 279756108.

8016579720 is a `hidden beast` number, since 8 + 0 + 1 + 6 + 579 + 72 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 41661 + ... + 133299.

It is an arithmetic number, because the mean of its divisors is an integer number (211344750).

Almost surely, 2^8016579720 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 8016579720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13526064000).

8016579720 is an abundant number, since it is smaller than the sum of its proper divisors (19035548280).

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

8016579720 is an equidigital number, since it uses as much as digits as its factorization.

8016579720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91671 (or 91649 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The square root of 8016579720 is about 89535.3545813049. The cubic root of 8016579720 is about 2001.3806899616.

The spelling of 8016579720 in words is "eight billion, sixteen million, five hundred seventy-nine thousand, seven hundred twenty".