8131475971208 has 16 divisors (see below), whose sum is σ = 15247045824000. Its totient is φ = 4065597084816.

The previous prime is 8131475971207. The next prime is 8131475971231. The reversal of 8131475971208 is 8021795741318.

It is a super-4 number, since 4×8131475971208⁴ (a number of 53 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (8131475971207) 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, 17367128 + ... + 17829191.

It is an arithmetic number, because the mean of its divisors is an integer number (952940364000).

Almost surely, 2^{8131475971208} is an apocalyptic number.

It is an amenable number.

8131475971208 is a deficient number, since it is larger than the sum of its proper divisors (7115569852792).

8131475971208 is a wasteful number, since it uses less digits than its factorization.

8131475971208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35225204 (or 35225200 counting only the distinct ones).

The product of its (nonzero) digits is 3386880, while the sum is 56.

The spelling of 8131475971208 in words is "eight trillion, one hundred thirty-one billion, four hundred seventy-five million, nine hundred seventy-one thousand, two hundred eight".