8123797312 has 28 divisors (see below), whose sum is σ = 16172203876. Its totient is φ = 4048911360.

The previous prime is 8123797309. The next prime is 8123797313. The reversal of 8123797312 is 2137973218.

It can be written as a sum of positive squares in 2 ways, for example, as 696115456 + 7427681856 = 26384^2 + 86184^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8123797313) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182739 + ... + 222802.

Almost surely, 2^8123797312 is an apocalyptic number.

It is an amenable number.

8123797312 is a deficient number, since it is larger than the sum of its proper divisors (8048406564).

8123797312 is a wasteful number, since it uses less digits than its factorization.

8123797312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405866 (or 405856 counting only the distinct ones).

The product of its digits is 127008, while the sum is 43.

The square root of 8123797312 is about 90132.1103270083. The cubic root of 8123797312 is about 2010.2636809922.

The spelling of 8123797312 in words is "eight billion, one hundred twenty-three million, seven hundred ninety-seven thousand, three hundred twelve".