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108723009668 = 22721369161751
BaseRepresentation
bin110010101000001100…
…1010111100010000100
3101101122002112010221212
41211100121113202010
53240131042302133
6121540251230552
710566154222400
oct1452031274204
9341562463855
10108723009668
11421223393a9
12190a3148458
13a338a8a220
145395772100
152c64e50148
hex1950657884

108723009668 has 72 divisors (see below), whose sum is σ = 238703097024. Its totient is φ = 42948360000.

The previous prime is 108723009667. The next prime is 108723009727. The reversal of 108723009668 is 866900327801.

It is not an unprimeable number, because it can be changed into a prime (108723009667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1729793 + ... + 1791543.

It is an arithmetic number, because the mean of its divisors is an integer number (3315320792).

Almost surely, 2108723009668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 108723009668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119351548512).

108723009668 is an abundant number, since it is smaller than the sum of its proper divisors (129980087356).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

108723009668 is a wasteful number, since it uses less digits than its factorization.

108723009668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62473 (or 62464 counting only the distinct ones).

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 108723009668 in words is "one hundred eight billion, seven hundred twenty-three million, nine thousand, six hundred sixty-eight".

Divisors: 1 2 4 7 13 14 26 28 49 52 91 98 182 196 364 637 691 1274 1382 2548 2764 4837 8983 9674 17966 19348 33859 35932 61751 62881 67718 123502 125762 135436 247004 251524 432257 440167 802763 864514 880334 1605526 1729028 1760668 3025799 3211052 5619341 6051598 11238682 12103196 22477364 39335387 42669941 78670774 85339882 157341548 170679764 298689587 554709233 597379174 1109418466 1194758348 2090827109 2218836932 3882964631 4181654218 7765929262 8363308436 15531858524 27180752417 54361504834 108723009668