8271197812 has 12 divisors (see below), whose sum is σ = 14827635396. Its totient is φ = 4034730560.

The previous prime is 8271197807. The next prime is 8271197821. The reversal of 8271197812 is 2187911728.

It can be written as a sum of positive squares in 2 ways, for example, as 480311056 + 7790886756 = 21916^2 + 88266^2 .

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, 25216903 + ... + 25217230.

It is an arithmetic number, because the mean of its divisors is an integer number (1235636283).

Almost surely, 2^8271197812 is an apocalyptic number.

8271197812 is a gapful number since it is divisible by the number (82) formed by its first and last digit.

It is an amenable number.

8271197812 is a deficient number, since it is larger than the sum of its proper divisors (6556437584).

8271197812 is a wasteful number, since it uses less digits than its factorization.

8271197812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50434178 (or 50434176 counting only the distinct ones).

The product of its digits is 112896, while the sum is 46.

The square root of 8271197812 is about 90946.1258768069. The cubic root of 8271197812 is about 2022.3491452657.

The spelling of 8271197812 in words is "eight billion, two hundred seventy-one million, one hundred ninety-seven thousand, eight hundred twelve".