42304785163987 has 2 divisors, whose sum is σ = 42304785163988. Its totient is φ = 42304785163986.

The previous prime is 42304785163919. The next prime is 42304785164023. The reversal of 42304785163987 is 78936158740324.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42304785163987 is a prime.

It is not a weakly prime, because it can be changed into another prime (42304785163387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21152392581993 + 21152392581994.

It is an arithmetic number, because the mean of its divisors is an integer number (21152392581994).

It is a 1-persistent number, because it is pandigital, but 2⋅42304785163987 = 84609570327974 is not.

Almost surely, 2^{42304785163987} is an apocalyptic number.

42304785163987 is a deficient number, since it is larger than the sum of its proper divisors (1).

42304785163987 is an equidigital number, since it uses as much as digits as its factorization.

42304785163987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 243855360, while the sum is 67.

The spelling of 42304785163987 in words is "forty-two trillion, three hundred four billion, seven hundred eighty-five million, one hundred sixty-three thousand, nine hundred eighty-seven".