817214684353 has 2 divisors, whose sum is σ = 817214684354. Its totient is φ = 817214684352.

The previous prime is 817214684333. The next prime is 817214684389. The reversal of 817214684353 is 353486412718.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 555774723009 + 261439961344 = 745503^2 + 511312^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-817214684353 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 817214684353.

It is not a weakly prime, because it can be changed into another prime (817214684333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408607342176 + 408607342177.

It is an arithmetic number, because the mean of its divisors is an integer number (408607342177).

Almost surely, 2^817214684353 is an apocalyptic number.

It is an amenable number.

817214684353 is a deficient number, since it is larger than the sum of its proper divisors (1).

817214684353 is an equidigital number, since it uses as much as digits as its factorization.

817214684353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3870720, while the sum is 52.

The spelling of 817214684353 in words is "eight hundred seventeen billion, two hundred fourteen million, six hundred eighty-four thousand, three hundred fifty-three".