42865521333071 has 2 divisors, whose sum is σ = 42865521333072. Its totient is φ = 42865521333070.

The previous prime is 42865521333043. The next prime is 42865521333073. The reversal of 42865521333071 is 17033312556824.

42865521333071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42865521333071 is a prime.

Together with 42865521333073, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42865521333073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21432760666535 + 21432760666536.

It is an arithmetic number, because the mean of its divisors is an integer number (21432760666536).

Almost surely, 2^{42865521333071} is an apocalyptic number.

42865521333071 is a deficient number, since it is larger than the sum of its proper divisors (1).

42865521333071 is an equidigital number, since it uses as much as digits as its factorization.

42865521333071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3628800, while the sum is 50.

Adding to 42865521333071 its reverse (17033312556824), we get a palindrome (59898833889895).

The spelling of 42865521333071 in words is "forty-two trillion, eight hundred sixty-five billion, five hundred twenty-one million, three hundred thirty-three thousand, seventy-one".