42865543013563 has 4 divisors (see below), whose sum is σ = 42865558318080. Its totient is φ = 42865527709048.

The previous prime is 42865543013543. The next prime is 42865543013627. The reversal of 42865543013563 is 36531034556824.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42865543013563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42865543013533) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2115748 + ... + 9497761.

It is an arithmetic number, because the mean of its divisors is an integer number (10716389579520).

Almost surely, 2^{42865543013563} is an apocalyptic number.

42865543013563 is a deficient number, since it is larger than the sum of its proper divisors (15304517).

42865543013563 is a wasteful number, since it uses less digits than its factorization.

42865543013563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15304516.

The product of its (nonzero) digits is 31104000, while the sum is 55.

The spelling of 42865543013563 in words is "forty-two trillion, eight hundred sixty-five billion, five hundred forty-three million, thirteen thousand, five hundred sixty-three".