8681873528646 has 96 divisors (see below), whose sum is σ = 20077529472000. Its totient is φ = 2703413366784.

The previous prime is 8681873528641. The next prime is 8681873528681. The reversal of 8681873528646 is 6468253781868.

8681873528646 is a `hidden beast` number, since 8 + 6 + 81 + 87 + 352 + 86 + 46 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8681873528641) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20567911 + ... + 20985773.

It is an arithmetic number, because the mean of its divisors is an integer number (209140932000).

Almost surely, 2^{8681873528646} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8681873528646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10038764736000).

8681873528646 is an abundant number, since it is smaller than the sum of its proper divisors (11395655943354).

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

8681873528646 is a wasteful number, since it uses less digits than its factorization.

8681873528646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 418738 (or 418735 counting only the distinct ones).

The product of its digits is 743178240, while the sum is 72.

The spelling of 8681873528646 in words is "eight trillion, six hundred eighty-one billion, eight hundred seventy-three million, five hundred twenty-eight thousand, six hundred forty-six".