84843707509 has 16 divisors (see below), whose sum is σ = 94084845120. Its totient is φ = 75867010560.

The previous prime is 84843707497. The next prime is 84843707569. The reversal of 84843707509 is 90570734848.

It is not a de Polignac number, because 84843707509 - 2¹⁹ = 84843183221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84843707509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84843707569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69994 + ... + 417835.

It is an arithmetic number, because the mean of its divisors is an integer number (5880302820).

Almost surely, 2^84843707509 is an apocalyptic number.

It is an amenable number.

84843707509 is a deficient number, since it is larger than the sum of its proper divisors (9241137611).

84843707509 is a wasteful number, since it uses less digits than its factorization.

84843707509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488100.

The product of its (nonzero) digits is 6773760, while the sum is 55.

The spelling of 84843707509 in words is "eighty-four billion, eight hundred forty-three million, seven hundred seven thousand, five hundred nine".