84164718563 has 2 divisors, whose sum is σ = 84164718564. Its totient is φ = 84164718562.

The previous prime is 84164718553. The next prime is 84164718569. The reversal of 84164718563 is 36581746148.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 84164718563 - 2²⁰ = 84163669987 is a prime.

It is not a weakly prime, because it can be changed into another prime (84164718569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42082359281 + 42082359282.

It is an arithmetic number, because the mean of its divisors is an integer number (42082359282).

Almost surely, 2^84164718563 is an apocalyptic number.

84164718563 is a deficient number, since it is larger than the sum of its proper divisors (1).

84164718563 is an equidigital number, since it uses as much as digits as its factorization.

84164718563 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3870720, while the sum is 53.

The spelling of 84164718563 in words is "eighty-four billion, one hundred sixty-four million, seven hundred eighteen thousand, five hundred sixty-three".