842787556887863 has 2 divisors, whose sum is σ = 842787556887864. Its totient is φ = 842787556887862.

The previous prime is 842787556887851. The next prime is 842787556887869. The reversal of 842787556887863 is 368788655787248.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 842787556887863 - 2⁴ = 842787556887847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (842787556887869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 421393778443931 + 421393778443932.

It is an arithmetic number, because the mean of its divisors is an integer number (421393778443932).

Almost surely, 2^{842787556887863} is an apocalyptic number.

842787556887863 is a deficient number, since it is larger than the sum of its proper divisors (1).

842787556887863 is an equidigital number, since it uses as much as digits as its factorization.

842787556887863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 242771558400, while the sum is 92.

The spelling of 842787556887863 in words is "eight hundred forty-two trillion, seven hundred eighty-seven billion, five hundred fifty-six million, eight hundred eighty-seven thousand, eight hundred sixty-three".