8046721720 has 16 divisors (see below), whose sum is σ = 18105123960. Its totient is φ = 3218688672.

The previous prime is 8046721699. The next prime is 8046721747. The reversal of 8046721720 is 271276408.

It is a self number, because there is not a number n which added to its sum of digits gives 8046721720.

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, 100583982 + ... + 100584061.

Almost surely, 2^8046721720 is an apocalyptic number.

It is an amenable number.

8046721720 is an abundant number, since it is smaller than the sum of its proper divisors (10058402240).

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

8046721720 is a wasteful number, since it uses less digits than its factorization.

8046721720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201168054 (or 201168050 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 37.

The square root of 8046721720 is about 89703.5212240857. The cubic root of 8046721720 is about 2003.8859215835.

The spelling of 8046721720 in words is "eight billion, forty-six million, seven hundred twenty-one thousand, seven hundred twenty".