8640541252568 has 16 divisors (see below), whose sum is σ = 17154015722280. Its totient is φ = 4066137059968.

The previous prime is 8640541252547. The next prime is 8640541252573. The reversal of 8640541252568 is 8652521450468.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31766695646 + ... + 31766695917.

Almost surely, 2^{8640541252568} is an apocalyptic number.

It is an amenable number.

8640541252568 is a deficient number, since it is larger than the sum of its proper divisors (8513474469712).

8640541252568 is a wasteful number, since it uses less digits than its factorization.

8640541252568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63533391586 (or 63533391582 counting only the distinct ones).

The product of its (nonzero) digits is 18432000, while the sum is 56.

The spelling of 8640541252568 in words is "eight trillion, six hundred forty billion, five hundred forty-one million, two hundred fifty-two thousand, five hundred sixty-eight".