102317117809 has 2 divisors, whose sum is σ = 102317117810. Its totient is φ = 102317117808.

The previous prime is 102317117807. The next prime is 102317117867. The reversal of 102317117809 is 908711713201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63087373584 + 39229744225 = 251172^2 + 198065^2 .

It is a cyclic number.

It is not a de Polignac number, because 102317117809 - 2¹ = 102317117807 is a prime.

Together with 102317117807, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (102317117807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51158558904 + 51158558905.

It is an arithmetic number, because the mean of its divisors is an integer number (51158558905).

Almost surely, 2^102317117809 is an apocalyptic number.

It is an amenable number.

102317117809 is a deficient number, since it is larger than the sum of its proper divisors (1).

102317117809 is an equidigital number, since it uses as much as digits as its factorization.

102317117809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 40.

The spelling of 102317117809 in words is "one hundred two billion, three hundred seventeen million, one hundred seventeen thousand, eight hundred nine".