108565719109 has 2 divisors, whose sum is σ = 108565719110. Its totient is φ = 108565719108.

The previous prime is 108565719083. The next prime is 108565719127. The reversal of 108565719109 is 901917565801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88062343009 + 20503376100 = 296753^2 + 143190^2 .

It is a cyclic number.

It is not a de Polignac number, because 108565719109 - 2⁵ = 108565719077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108565719139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54282859554 + 54282859555.

It is an arithmetic number, because the mean of its divisors is an integer number (54282859555).

Almost surely, 2^108565719109 is an apocalyptic number.

It is an amenable number.

108565719109 is a deficient number, since it is larger than the sum of its proper divisors (1).

108565719109 is an equidigital number, since it uses as much as digits as its factorization.

108565719109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 680400, while the sum is 52.

The spelling of 108565719109 in words is "one hundred eight billion, five hundred sixty-five million, seven hundred nineteen thousand, one hundred nine".