108965776889 has 4 divisors (see below), whose sum is σ = 111910797924. Its totient is φ = 106020755856.

The previous prime is 108965776883. The next prime is 108965776897. The reversal of 108965776889 is 988677569801.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 988677569801 = 883 ⋅1119680147.

It can be written as a sum of positive squares in 2 ways, for example, as 93933055225 + 15032721664 = 306485^2 + 122608^2 .

It is a cyclic number.

It is not a de Polignac number, because 108965776889 - 2¹² = 108965772793 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (108965776883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1472510462 + ... + 1472510535.

It is an arithmetic number, because the mean of its divisors is an integer number (27977699481).

Almost surely, 2^108965776889 is an apocalyptic number.

It is an amenable number.

108965776889 is a deficient number, since it is larger than the sum of its proper divisors (2945021035).

108965776889 is an equidigital number, since it uses as much as digits as its factorization.

108965776889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2945021034.

The product of its (nonzero) digits is 365783040, while the sum is 74.

The spelling of 108965776889 in words is "one hundred eight billion, nine hundred sixty-five million, seven hundred seventy-six thousand, eight hundred eighty-nine".