108866555249 has 2 divisors, whose sum is σ = 108866555250. Its totient is φ = 108866555248.

The previous prime is 108866555137. The next prime is 108866555257. The reversal of 108866555249 is 942555668801.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 105693261025 + 3173294224 = 325105^2 + 56332^2 .

It is a cyclic number.

It is not a de Polignac number, because 108866555249 - 2¹⁶ = 108866489713 is a prime.

It is not a weakly prime, because it can be changed into another prime (108866555299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54433277624 + 54433277625.

It is an arithmetic number, because the mean of its divisors is an integer number (54433277625).

Almost surely, 2^108866555249 is an apocalyptic number.

It is an amenable number.

108866555249 is a deficient number, since it is larger than the sum of its proper divisors (1).

108866555249 is an equidigital number, since it uses as much as digits as its factorization.

108866555249 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736000, while the sum is 59.

The spelling of 108866555249 in words is "one hundred eight billion, eight hundred sixty-six million, five hundred fifty-five thousand, two hundred forty-nine".