84210267208813 has 2 divisors, whose sum is σ = 84210267208814. Its totient is φ = 84210267208812.

The previous prime is 84210267208799. The next prime is 84210267208973. The reversal of 84210267208813 is 31880276201248.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 72550651122889 + 11659616085924 = 8517667^2 + 3414618^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84210267208813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84210267208513) 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, 42105133604406 + 42105133604407.

It is an arithmetic number, because the mean of its divisors is an integer number (42105133604407).

Almost surely, 2^{84210267208813} is an apocalyptic number.

It is an amenable number.

84210267208813 is a deficient number, since it is larger than the sum of its proper divisors (1).

84210267208813 is an equidigital number, since it uses as much as digits as its factorization.

84210267208813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2064384, while the sum is 52.

The spelling of 84210267208813 in words is "eighty-four trillion, two hundred ten billion, two hundred sixty-seven million, two hundred eight thousand, eight hundred thirteen".