108687082109 has 2 divisors, whose sum is σ = 108687082110. Its totient is φ = 108687082108.

The previous prime is 108687082069. The next prime is 108687082157. The reversal of 108687082109 is 901280786801.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62943283225 + 45743798884 = 250885^2 + 213878^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-108687082109 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (108687042109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54343541054 + 54343541055.

It is an arithmetic number, because the mean of its divisors is an integer number (54343541055).

Almost surely, 2^108687082109 is an apocalyptic number.

It is an amenable number.

108687082109 is a deficient number, since it is larger than the sum of its proper divisors (1).

108687082109 is an equidigital number, since it uses as much as digits as its factorization.

108687082109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 50.

The spelling of 108687082109 in words is "one hundred eight billion, six hundred eighty-seven million, eighty-two thousand, one hundred nine".