801688808917 has 2 divisors, whose sum is σ = 801688808918. Its totient is φ = 801688808916.

The previous prime is 801688808839. The next prime is 801688809011. The reversal of 801688808917 is 719808886108.

801688808917 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 756910440036 + 44778368881 = 870006^2 + 211609^2 .

It is a cyclic number.

It is not a de Polignac number, because 801688808917 - 2¹⁵ = 801688776149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (801688808117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 400844404458 + 400844404459.

It is an arithmetic number, because the mean of its divisors is an integer number (400844404459).

Almost surely, 2^801688808917 is an apocalyptic number.

It is an amenable number.

801688808917 is a deficient number, since it is larger than the sum of its proper divisors (1).

801688808917 is an equidigital number, since it uses as much as digits as its factorization.

801688808917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12386304, while the sum is 64.

The spelling of 801688808917 in words is "eight hundred one billion, six hundred eighty-eight million, eight hundred eight thousand, nine hundred seventeen".