84993357945673 has 2 divisors, whose sum is σ = 84993357945674. Its totient is φ = 84993357945672.

The previous prime is 84993357945667. The next prime is 84993357945697. The reversal of 84993357945673 is 37654975339948.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49042457193024 + 35950900752649 = 7003032^2 + 5995907^2 .

It is a cyclic number.

It is not a de Polignac number, because 84993357945673 - 2⁹ = 84993357945161 is a prime.

It is not a weakly prime, because it can be changed into another prime (84993357945373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42496678972836 + 42496678972837.

It is an arithmetic number, because the mean of its divisors is an integer number (42496678972837).

Almost surely, 2^{84993357945673} is an apocalyptic number.

It is an amenable number.

84993357945673 is a deficient number, since it is larger than the sum of its proper divisors (1).

84993357945673 is an equidigital number, since it uses as much as digits as its factorization.

84993357945673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18517766400, while the sum is 82.

The spelling of 84993357945673 in words is "eighty-four trillion, nine hundred ninety-three billion, three hundred fifty-seven million, nine hundred forty-five thousand, six hundred seventy-three".