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68721541119 = 327211127331337
BaseRepresentation
bin100000000000000011…
…1110111111111111111
320120101022200222222200
41000000013313333333
52111220203303434
651323101042543
74651661314200
oct1000007677777
9216338628880
1068721541119
1127165577a90
121139a856453
1366326123ca
14347cd015a7
151bc3278199
hex10001f7fff

68721541119 has 144 divisors (see below), whose sum is σ = 127721558016. Its totient is φ = 35206617600.

The previous prime is 68721541087. The next prime is 68721541129. The reversal of 68721541119 is 91114512786.

68721541119 is a `hidden beast` number, since 6 + 8 + 7 + 215 + 411 + 19 = 666.

It is not a de Polignac number, because 68721541119 - 25 = 68721541087 is a prime.

It is a super-2 number, since 2×687215411192 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68721541129) by changing a digit.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 203921319 + ... + 203921655.

It is an arithmetic number, because the mean of its divisors is an integer number (886955264).

Almost surely, 268721541119 is an apocalyptic number.

68721541119 is a deficient number, since it is larger than the sum of its proper divisors (59000016897).

68721541119 is a wasteful number, since it uses less digits than its factorization.

68721541119 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 826 (or 816 counting only the distinct ones).

The product of its digits is 120960, while the sum is 45.

The spelling of 68721541119 in words is "sixty-eight billion, seven hundred twenty-one million, five hundred forty-one thousand, one hundred nineteen".

Divisors: 1 3 7 9 11 21 33 49 63 77 99 127 147 231 331 337 381 441 539 693 889 993 1011 1143 1397 1617 2317 2359 2667 2979 3033 3641 3707 4191 4851 6223 6951 7077 8001 9779 10923 11121 12573 16219 16513 18669 20853 21231 25487 25949 29337 32769 33363 42037 42799 48657 49539 56007 68453 76461 77847 88011 111547 126111 128397 145971 148617 178409 181643 205359 229383 233541 294259 299593 334641 378333 385191 462407 470789 535227 544929 616077 780829 882777 898779 1003923 1227017 1387221 1412367 1605681 1634787 2059813 2097151 2342487 2648331 2696337 3236849 3295523 3681051 4161663 4237101 5465803 6179439 6291453 7027461 8589119 9710547 9886569 11043153 14166469 16397409 18538317 18874359 22657943 23068661 25767357 29131641 29659707 42499407 49192227 60123833 67973829 69205983 77302071 99165283 127498221 155831159 180371499 203921487 207617949 297495849 467493477 541114497 694156981 892487547 1090818113 1402480431 2082470943 3272454339 6247412829 7635726791 9817363017 22907180373 68721541119