84205045243 has 16 divisors (see below), whose sum is σ = 92120878080. Its totient is φ = 76332888000.

The previous prime is 84205045237. The next prime is 84205045261. The reversal of 84205045243 is 34254050248.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84205045243 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84205040243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11349271 + ... + 11356687.

It is an arithmetic number, because the mean of its divisors is an integer number (5757554880).

Almost surely, 2^84205045243 is an apocalyptic number.

84205045243 is a deficient number, since it is larger than the sum of its proper divisors (7915832837).

84205045243 is a wasteful number, since it uses less digits than its factorization.

84205045243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10218.

The product of its (nonzero) digits is 153600, while the sum is 37.

The spelling of 84205045243 in words is "eighty-four billion, two hundred five million, forty-five thousand, two hundred forty-three".