8718517812 has 24 divisors (see below), whose sum is σ = 20540718016. Its totient is φ = 2877956928.

The previous prime is 8718517799. The next prime is 8718517831. The reversal of 8718517812 is 2187158178.

It is a super-2 number, since 2×8718517812² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3525673 + ... + 3528144.

Almost surely, 2^8718517812 is an apocalyptic number.

It is an amenable number.

8718517812 is an abundant number, since it is smaller than the sum of its proper divisors (11822200204).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8718517812 is a wasteful number, since it uses less digits than its factorization.

8718517812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7053927 (or 7053925 counting only the distinct ones).

The product of its digits is 250880, while the sum is 48.

The square root of 8718517812 is about 93373.0036573741. The cubic root of 8718517812 is about 2058.1683070690.

The spelling of 8718517812 in words is "eight billion, seven hundred eighteen million, five hundred seventeen thousand, eight hundred twelve".