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108188695321 = 7193792146303
BaseRepresentation
bin110010011000010001…
…1000111101100011001
3101100020212010011110121
41210300203013230121
53233032301222241
6121411243113241
710550005510540
oct1446043075431
9340225104417
10108188695321
11419787750a3
1218b74212821
13a28217c4a5
145344807157
152c330a9ad1
hex19308c7b19

108188695321 has 16 divisors (see below), whose sum is σ = 130495283200. Its totient is φ = 87620632848.

The previous prime is 108188695297. The next prime is 108188695327. The reversal of 108188695321 is 123596881801.

It is not a de Polignac number, because 108188695321 - 25 = 108188695289 is a prime.

It is the 328921-st Hogben number.

It is not an unprimeable number, because it can be changed into a prime (108188695327) by changing a digit.

It is a nontrivial repunit in base 328920.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1022745 + ... + 1123558.

It is an arithmetic number, because the mean of its divisors is an integer number (8155955200).

Almost surely, 2108188695321 is an apocalyptic number.

It is an amenable number.

108188695321 is a deficient number, since it is larger than the sum of its proper divisors (22306587879).

108188695321 is a wasteful number, since it uses less digits than its factorization.

108188695321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2146708.

The product of its (nonzero) digits is 829440, while the sum is 52.

The spelling of 108188695321 in words is "one hundred eight billion, one hundred eighty-eight million, six hundred ninety-five thousand, three hundred twenty-one".

Divisors: 1 7 19 133 379 2653 7201 50407 2146303 15024121 40779757 285458299 813448837 5694141859 15455527903 108188695321