42816165859 has 2 divisors, whose sum is σ = 42816165860. Its totient is φ = 42816165858.

The previous prime is 42816165851. The next prime is 42816165863. The reversal of 42816165859 is 95856161824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42816165859 - 2³ = 42816165851 is a prime.

It is not a weakly prime, because it can be changed into another prime (42816165851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21408082929 + 21408082930.

It is an arithmetic number, because the mean of its divisors is an integer number (21408082930).

Almost surely, 2^42816165859 is an apocalyptic number.

42816165859 is a deficient number, since it is larger than the sum of its proper divisors (1).

42816165859 is an equidigital number, since it uses as much as digits as its factorization.

42816165859 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4147200, while the sum is 55.

The spelling of 42816165859 in words is "forty-two billion, eight hundred sixteen million, one hundred sixty-five thousand, eight hundred fifty-nine".