81959934672

Names of 81959934672

• Cardinal: 81959934672 can be written as Eighty-one billion, nine hundred fifty-nine million, nine hundred thirty-four thousand, six hundred seventy-two.

Scientific notation

• Scientific notation: 8.1959934672 × 10¹⁰

Factors of 81959934672

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 2932

Divisors of 81959934672

• Number of divisors d(n): 480
• Complete list of divisors:
  1 2 3 4 6 7 8 9 11 12 14 16 18 21 22 24 27 28 33 36 42 44 48 49 54 56 63 66 72 77 84 88 98 99 108 112 121 126 132 144 147 154 168 176 189 196 198 216 231 242 252 264 294 297 308 336 363 378 392 396 432 441 462 484 504 528 539 588 594 616 693 726 756 784 792 847 882 924 968 1008 1078 1089 1176 1188 1232 1323 1331 1386 1452 1512 1584 1617 1694 1764 1848 1936 2079 2156 2178 2352 2376 2541 2646 2662 2772 2904 2909 3024 3234 3267 3388 3528 3696 3993 4158 4312 4356 4752 4851 5082 5292 5324 5544 5808 5818 5929 6468 6534 6776 7056 7623 7986 8316 8624 8712 8727 9317 9702 10164 10584 10648 11088 11636 11858 11979 12936 13068 13552 14553 15246 15972 16632 17424 17454 17787 18634 19404 20328 20363 21168 21296 22869 23272 23716 23958 25872 26136 26181 27951 29106 30492 31944 31999 33264 34908 35574 35937 37268 38808 40656 40726 45738 46544 47432 47916 52272 52362 53361 55902 58212 60984 61089 63888 63998 65219 69816 71148 71874 74536 77616 78543 81452 83853 91476 94864 95832 95997 104724 106722 111804 116424 121968 122178 127996 130438 139632 142296 142541 143748 149072 157086 160083 162904 167706 182952 183267 191664 191994 195657 209448 213444 223608 223993 232848 244356 251559 255992 260876 284592 285082 287496 287991 314172 320166 325808 335412 351989 365904 366534 383988 391314 418896 426888 427623 447216 447986 488712 503118 511984 521752 549801 570164 574992 575982 586971 628344 640332 670824 671979 703978 733068 767976 782628 853776 855246 863973 895972 977424 1006236 1043504 1055967 1099602 1140328 1151964 1173942 1256688 1280664 1282869 1341648 1343958 1407956 1466136 1535952 1565256 1567951 1710492 1727946 1760913 1791944 2012472 2015937 2111934 2199204 2280656 2303928 2347884 2463923 2561328 2565738 2687916 2815912 2932272 3130512 3135902 3167901 3420984 3455892 3521826 3583888 3848607 3871879 4024944 4031874 4223868 4398408 4607856 4695768 4703853 4927846 5131476 5375832 5631824 6047811 6271804 6335802 6841968 6911784 7043652 7391769 7697214 7743758 8063748 8447736 8796816 9391536 9407706 9503703 9855692 10262952 10751664 11615637 12095622 12543608 12671604 13823568 14087304 14111559 14783538 15394428 15487516 16127496 16895472 17247461 18815412 19007406 19711384 20525904 22175307 23231274 24191244 25087216 25343208 27103153 28174608 28223118 29567076 30788856 30975032 32254992 34494922 34846911 37630824 38014812 39422768 42334677 44350614 46462548 48382488 50686416 51742383 54206306 56446236 59134152 61577712 61950064 66525921 68989844 69693822 75261648 76029624 81309459 84669354 88701228 92925096 96764976 103484766 104540733 108412612 112892472 118268304 133051842 137979688 139387644 152059248 155227149 162618918 169338708 177402456 185850192 189722071 206969532 209081466 216825224 225784944 243928377 266103684 275959376 278775288 310454298 325237836 338677416 354804912 379444142 413939064 418162932 433650448 465681447 487856754 532207368 557550576 569166213 620908596 650475672 677354832 731785131 758888284 827878128 836325864 931362894 975713508 1064414736 1138332426 1241817192 1300951344 1463570262 1517776568 1672651728 1707498639 1862725788 1951427016 2276664852 2483634384 2927140524 3035553136 3414997278 3725451576 3902854032 4553329704 5122495917 5854281048 6829994556 7450903152 9106659408 10244991834 11708562096 13659989112 20489983668 27319978224 40979967336 81959934672
• Sum of all divisors σ(n): 301113763200
• Sum of proper divisors (its aliquot sum) s(n): 219153828528
• 81959934672 is an abundant number, because the sum of its proper divisors (219153828528) is greater than itself. Its abundance is 137193893856

Bases of 81959934672

• Binary: 1001100010101001100010101101011010000₂
• Hexadecimal: 0x1315315AD0
• Base-36: 11NGTUC0

Squares and roots of 81959934672

• 81959934672 squared (81959934672²) is 6717430891438507747584
• 81959934672 cubed (81959934672³) is 550560197025974819097150505832448
• The square root of 81959934672 is 286286.4556209393
• The cube root of 81959934672 is 4343.7737970181

Scales and comparisons

• 81,959,934,672 seconds is equal to 2,606 years, 3 weeks, 5 days, 8 hours, 31 minutes, 12 seconds.
• To count from 1 to 81,959,934,672 would take you about five thousand, two hundred twelve years!

  This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 81959934672 cubic inches would be around 362 feet tall.

Recreational maths with 81959934672

• 81959934672 backwards is 27643995918
• 81959934672 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81959934672's digits is 63
• More coming soon!