8520538121312 has 288 divisors, whose sum is σ = 20046095032320. Its totient is φ = 3553704161280.

The previous prime is 8520538121309. The next prime is 8520538121357. The reversal of 8520538121312 is 2131218350258.

It is a self number, because there is not a number n which added to its sum of digits gives 8520538121312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2673527783 + ... + 2673530969.

It is an arithmetic number, because the mean of its divisors is an integer number (69604496640).

Almost surely, 2^{8520538121312} 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 8520538121312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10023047516160).

8520538121312 is an abundant number, since it is smaller than the sum of its proper divisors (11525556911008).

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

8520538121312 is a wasteful number, since it uses less digits than its factorization.

8520538121312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594 (or 3579 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 41.

The spelling of 8520538121312 in words is "eight trillion, five hundred twenty billion, five hundred thirty-eight million, one hundred twenty-one thousand, three hundred twelve".