42864986191 has 2 divisors, whose sum is σ = 42864986192. Its totient is φ = 42864986190.

The previous prime is 42864986083. The next prime is 42864986237. The reversal of 42864986191 is 19168946824.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42864986191 - 2¹³ = 42864977999 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42864986491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21432493095 + 21432493096.

It is an arithmetic number, because the mean of its divisors is an integer number (21432493096).

Almost surely, 2^42864986191 is an apocalyptic number.

42864986191 is a deficient number, since it is larger than the sum of its proper divisors (1).

42864986191 is an equidigital number, since it uses as much as digits as its factorization.

42864986191 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5971968, while the sum is 58.

The spelling of 42864986191 in words is "forty-two billion, eight hundred sixty-four million, nine hundred eighty-six thousand, one hundred ninety-one".