42771717910871 has 2 divisors, whose sum is σ = 42771717910872. Its totient is φ = 42771717910870.

The previous prime is 42771717910843. The next prime is 42771717910907. The reversal of 42771717910871 is 17801971717724.

42771717910871 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 42771717910871 - 2¹⁸ = 42771717648727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42771717916871) 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, 21385858955435 + 21385858955436.

It is an arithmetic number, because the mean of its divisors is an integer number (21385858955436).

Almost surely, 2^{42771717910871} is an apocalyptic number.

42771717910871 is a deficient number, since it is larger than the sum of its proper divisors (1).

42771717910871 is an equidigital number, since it uses as much as digits as its factorization.

42771717910871 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9680832, while the sum is 62.

The spelling of 42771717910871 in words is "forty-two trillion, seven hundred seventy-one billion, seven hundred seventeen million, nine hundred ten thousand, eight hundred seventy-one".