108950865891 has 96 divisors (see below), whose sum is σ = 178019831808. Its totient is φ = 59024609280.

The previous prime is 108950865883. The next prime is 108950865901. The reversal of 108950865891 is 198568059801.

It is not a de Polignac number, because 108950865891 - 2³ = 108950865883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (108950865091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 45527791 + ... + 45530183.

It is an arithmetic number, because the mean of its divisors is an integer number (1854373248).

Almost surely, 2^108950865891 is an apocalyptic number.

108950865891 is a deficient number, since it is larger than the sum of its proper divisors (69068965917).

108950865891 is a wasteful number, since it uses less digits than its factorization.

108950865891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2641 (or 2634 counting only the distinct ones).

The product of its (nonzero) digits is 6220800, while the sum is 60.

The spelling of 108950865891 in words is "one hundred eight billion, nine hundred fifty million, eight hundred sixty-five thousand, eight hundred ninety-one".