8197512812 has 12 divisors (see below), whose sum is σ = 15189509160. Its totient is φ = 3857653056.

The previous prime is 8197512811. The next prime is 8197512833. The reversal of 8197512812 is 2182157918.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (8197512811) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 60275762 + ... + 60275897.

It is an arithmetic number, because the mean of its divisors is an integer number (1265792430).

Almost surely, 2^8197512812 is an apocalyptic number.

It is an amenable number.

8197512812 is a deficient number, since it is larger than the sum of its proper divisors (6991996348).

8197512812 is a wasteful number, since it uses less digits than its factorization.

8197512812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120551680 (or 120551678 counting only the distinct ones).

The product of its digits is 80640, while the sum is 44.

The square root of 8197512812 is about 90540.1171415191. The cubic root of 8197512812 is about 2016.3257729585.

The spelling of 8197512812 in words is "eight billion, one hundred ninety-seven million, five hundred twelve thousand, eight hundred twelve".