42013566671 has 2 divisors, whose sum is σ = 42013566672. Its totient is φ = 42013566670.

The previous prime is 42013566613. The next prime is 42013566719. The reversal of 42013566671 is 17666531024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42013566671 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42013566601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21006783335 + 21006783336.

It is an arithmetic number, because the mean of its divisors is an integer number (21006783336).

Almost surely, 2^42013566671 is an apocalyptic number.

42013566671 is a deficient number, since it is larger than the sum of its proper divisors (1).

42013566671 is an equidigital number, since it uses as much as digits as its factorization.

42013566671 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 181440, while the sum is 41.

The spelling of 42013566671 in words is "forty-two billion, thirteen million, five hundred sixty-six thousand, six hundred seventy-one".