8321797512 has 96 divisors (see below), whose sum is σ = 25777876800. Its totient is φ = 2375816832.

The previous prime is 8321797507. The next prime is 8321797537. The reversal of 8321797512 is 2157971238.

8321797512 is a `hidden beast` number, since 8 + 32 + 17 + 97 + 512 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 729678 + ... + 740994.

It is an arithmetic number, because the mean of its divisors is an integer number (268519550).

Almost surely, 2^8321797512 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 8321797512, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12888938400).

8321797512 is an abundant number, since it is smaller than the sum of its proper divisors (17456079288).

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

8321797512 is a wasteful number, since it uses less digits than its factorization.

8321797512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12795 (or 12788 counting only the distinct ones).

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

The square root of 8321797512 is about 91223.8867402612. The cubic root of 8321797512 is about 2026.4647239103.

The spelling of 8321797512 in words is "eight billion, three hundred twenty-one million, seven hundred ninety-seven thousand, five hundred twelve".