8103172816 has 20 divisors (see below), whose sum is σ = 15704343072. Its totient is φ = 4050439136.

The previous prime is 8103172789. The next prime is 8103172817. The reversal of 8103172816 is 6182713018.

It is a super-2 number, since 2×8103172816² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8103172817) 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, 11926 + ... + 127861.

Almost surely, 2^8103172816 is an apocalyptic number.

It is an amenable number.

8103172816 is a deficient number, since it is larger than the sum of its proper divisors (7601170256).

8103172816 is a wasteful number, since it uses less digits than its factorization.

8103172816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143418 (or 143412 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 8103172816 is about 90017.6250297685. The cubic root of 8103172816 is about 2008.5610367044.

The spelling of 8103172816 in words is "eight billion, one hundred three million, one hundred seventy-two thousand, eight hundred sixteen".