8715813508820 has 192 divisors, whose sum is σ = 21159895680000. Its totient is φ = 2982350868480.

The previous prime is 8715813508817. The next prime is 8715813508823. The reversal of 8715813508820 is 288053185178.

It is an interprime number because it is at equal distance from previous prime (8715813508817) and next prime (8715813508823).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8715813508823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 695090111 + ... + 695102649.

It is an arithmetic number, because the mean of its divisors is an integer number (110207790000).

Almost surely, 2^{8715813508820} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8715813508820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10579947840000).

8715813508820 is an abundant number, since it is smaller than the sum of its proper divisors (12444082171180).

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

8715813508820 is a wasteful number, since it uses less digits than its factorization.

8715813508820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13686 (or 13684 counting only the distinct ones).

The product of its (nonzero) digits is 4300800, while the sum is 56.

The spelling of 8715813508820 in words is "eight trillion, seven hundred fifteen billion, eight hundred thirteen million, five hundred eight thousand, eight hundred twenty".