108822991689 has 6 divisors (see below), whose sum is σ = 157188765786. Its totient is φ = 72548661120.

The previous prime is 108822991687. The next prime is 108822991699. The reversal of 108822991689 is 986199228801.

108822991689 is a `hidden beast` number, since 108 + 82 + 299 + 168 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 94075318089 + 14747673600 = 306717^2 + 121440^2 .

It is not a de Polignac number, because 108822991689 - 2¹ = 108822991687 is a prime.

It is not an unprimeable number, because it can be changed into a prime (108822991687) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6045721752 + ... + 6045721769.

It is an arithmetic number, because the mean of its divisors is an integer number (26198127631).

Almost surely, 2^108822991689 is an apocalyptic number.

It is an amenable number.

108822991689 is a deficient number, since it is larger than the sum of its proper divisors (48365774097).

108822991689 is a wasteful number, since it uses less digits than its factorization.

108822991689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12091443527 (or 12091443524 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 63.

The spelling of 108822991689 in words is "one hundred eight billion, eight hundred twenty-two million, nine hundred ninety-one thousand, six hundred eighty-nine".