42887643533017 has 4 divisors (see below), whose sum is σ = 42997894545060. Its totient is φ = 42777392520976.

The previous prime is 42887643532997. The next prime is 42887643533051. The reversal of 42887643533017 is 71033534678824.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31606670364361 + 11280973168656 = 5621981^2 + 3358716^2 .

It is a cyclic number.

It is not a de Polignac number, because 42887643533017 - 2²⁷ = 42887509315289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42887643533117) 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, 55125505438 + ... + 55125506215.

It is an arithmetic number, because the mean of its divisors is an integer number (10749473636265).

Almost surely, 2^{42887643533017} is an apocalyptic number.

It is an amenable number.

42887643533017 is a deficient number, since it is larger than the sum of its proper divisors (110251012043).

42887643533017 is a wasteful number, since it uses less digits than its factorization.

42887643533017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110251012042.

The product of its (nonzero) digits is 81285120, while the sum is 61.

The spelling of 42887643533017 in words is "forty-two trillion, eight hundred eighty-seven billion, six hundred forty-three million, five hundred thirty-three thousand, seventeen".