84216648565243 has 2 divisors, whose sum is σ = 84216648565244. Its totient is φ = 84216648565242.

The previous prime is 84216648565207. The next prime is 84216648565327. The reversal of 84216648565243 is 34256584661248.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84216648565243 - 2⁹ = 84216648564731 is a prime.

It is not a weakly prime, because it can be changed into another prime (84216648565043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42108324282621 + 42108324282622.

It is an arithmetic number, because the mean of its divisors is an integer number (42108324282622).

Almost surely, 2^{84216648565243} is an apocalyptic number.

84216648565243 is a deficient number, since it is larger than the sum of its proper divisors (1).

84216648565243 is an equidigital number, since it uses as much as digits as its factorization.

84216648565243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 265420800, while the sum is 64.

The spelling of 84216648565243 in words is "eighty-four trillion, two hundred sixteen billion, six hundred forty-eight million, five hundred sixty-five thousand, two hundred forty-three".