8642540825520 has 160 divisors (see below), whose sum is σ = 31050545495040. Its totient is φ = 1947614807040.

The previous prime is 8642540825467. The next prime is 8642540825521. The reversal of 8642540825520 is 255280452468.

It is not an unprimeable number, because it can be changed into a prime (8642540825521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36108675 + ... + 36347234.

It is an arithmetic number, because the mean of its divisors is an integer number (194065909344).

Almost surely, 2^{8642540825520} is an apocalyptic number.

8642540825520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

8642540825520 is an abundant number, since it is smaller than the sum of its proper divisors (22408004669520).

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

8642540825520 is a wasteful number, since it uses less digits than its factorization.

8642540825520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72456003 (or 72455997 counting only the distinct ones).

The product of its (nonzero) digits is 6144000, while the sum is 51.

The spelling of 8642540825520 in words is "eight trillion, six hundred forty-two billion, five hundred forty million, eight hundred twenty-five thousand, five hundred twenty".