8112817215 has 24 divisors (see below), whose sum is σ = 14151797088. Its totient is φ = 4299272640.

The previous prime is 8112817213. The next prime is 8112817217. The reversal of 8112817215 is 5127182118.

It is an interprime number because it is at equal distance from previous prime (8112817213) and next prime (8112817217).

It is not a de Polignac number, because 8112817215 - 2¹ = 8112817213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8112817215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8112817213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 567091 + ... + 581220.

It is an arithmetic number, because the mean of its divisors is an integer number (589658212).

Almost surely, 2^8112817215 is an apocalyptic number.

8112817215 is a deficient number, since it is larger than the sum of its proper divisors (6038979873).

8112817215 is a wasteful number, since it uses less digits than its factorization.

8112817215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1148479 (or 1148476 counting only the distinct ones).

The product of its digits is 8960, while the sum is 36.

The square root of 8112817215 is about 90071.1786033690. The cubic root of 8112817215 is about 2009.3575841106.

The spelling of 8112817215 in words is "eight billion, one hundred twelve million, eight hundred seventeen thousand, two hundred fifteen".