84895820771 has 2 divisors, whose sum is σ = 84895820772. Its totient is φ = 84895820770.

The previous prime is 84895820761. The next prime is 84895820783. The reversal of 84895820771 is 17702859848.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 84895820771 - 2¹⁰ = 84895819747 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 84895820771.

It is not a weakly prime, because it can be changed into another prime (84895820761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42447910385 + 42447910386.

It is an arithmetic number, because the mean of its divisors is an integer number (42447910386).

Almost surely, 2^84895820771 is an apocalyptic number.

84895820771 is a deficient number, since it is larger than the sum of its proper divisors (1).

84895820771 is an equidigital number, since it uses as much as digits as its factorization.

84895820771 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9031680, while the sum is 59.

The spelling of 84895820771 in words is "eighty-four billion, eight hundred ninety-five million, eight hundred twenty thousand, seven hundred seventy-one".