8721358316 has 24 divisors (see below), whose sum is σ = 17373775104. Its totient is φ = 3791894480.

The previous prime is 8721358313. The next prime is 8721358357. The reversal of 8721358316 is 6138531278.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (8721358313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4307960 + ... + 4309983.

It is an arithmetic number, because the mean of its divisors is an integer number (723907296).

Almost surely, 2^8721358316 is an apocalyptic number.

It is an amenable number.

8721358316 is a deficient number, since it is larger than the sum of its proper divisors (8652416788).

8721358316 is a wasteful number, since it uses less digits than its factorization.

8721358316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8617981 (or 8617979 counting only the distinct ones).

The product of its digits is 241920, while the sum is 44.

The square root of 8721358316 is about 93388.2129393212. The cubic root of 8721358316 is about 2058.3918007348.

The spelling of 8721358316 in words is "eight billion, seven hundred twenty-one million, three hundred fifty-eight thousand, three hundred sixteen".