108878221089 has 105 divisors (see below), whose sum is σ = 181361287795. Its totient is φ = 65333466000.

The previous prime is 108878221003. The next prime is 108878221121. The reversal of 108878221089 is 980122878801.

The square root of 108878221089 is 329967.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 104608905489 + 4269315600 = 323433^2 + 65340^2 .

It is not a de Polignac number, because 108878221089 - 2¹¹ = 108878219041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (108878221189) 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 in 104 ways as a sum of consecutive naturals, for example, 1078002139 + ... + 1078002239.

Almost surely, 2^108878221089 is an apocalyptic number.

108878221089 is the 329967-th square number.

108878221089 is the 164984-th centered octagonal number.

It is an amenable number.

108878221089 is a deficient number, since it is larger than the sum of its proper divisors (72483066706).

108878221089 is an frugal number, since it uses more digits than its factorization.

108878221089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 264 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 54.

The spelling of 108878221089 in words is "one hundred eight billion, eight hundred seventy-eight million, two hundred twenty-one thousand, eighty-nine".