808435706861 has 2 divisors, whose sum is σ = 808435706862. Its totient is φ = 808435706860.

The previous prime is 808435706807. The next prime is 808435706867. The reversal of 808435706861 is 168607534808.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 557904424900 + 250531281961 = 746930^2 + 500531^2 .

It is a cyclic number.

It is not a de Polignac number, because 808435706861 - 2¹⁸ = 808435444717 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 808435706797 and 808435706806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (808435706867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404217853430 + 404217853431.

It is an arithmetic number, because the mean of its divisors is an integer number (404217853431).

Almost surely, 2^808435706861 is an apocalyptic number.

It is an amenable number.

808435706861 is a deficient number, since it is larger than the sum of its proper divisors (1).

808435706861 is an equidigital number, since it uses as much as digits as its factorization.

808435706861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7741440, while the sum is 56.

The spelling of 808435706861 in words is "eight hundred eight billion, four hundred thirty-five million, seven hundred six thousand, eight hundred sixty-one".