84180544853 has 2 divisors, whose sum is σ = 84180544854. Its totient is φ = 84180544852.

The previous prime is 84180544807. The next prime is 84180544859. The reversal of 84180544853 is 35844508148.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 84180059044 + 485809 = 290138^2 + 697^2 .

It is a cyclic number.

It is not a de Polignac number, because 84180544853 - 2¹⁸ = 84180282709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84180544859) 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 as a sum of consecutive naturals, namely, 42090272426 + 42090272427.

It is an arithmetic number, because the mean of its divisors is an integer number (42090272427).

Almost surely, 2^84180544853 is an apocalyptic number.

It is an amenable number.

84180544853 is a deficient number, since it is larger than the sum of its proper divisors (1).

84180544853 is an equidigital number, since it uses as much as digits as its factorization.

84180544853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2457600, while the sum is 50.

The spelling of 84180544853 in words is "eighty-four billion, one hundred eighty million, five hundred forty-four thousand, eight hundred fifty-three".