81437930616

Names of 81437930616

• Cardinal: 81437930616 can be written as Eighty-one billion, four hundred thirty-seven million, nine hundred thirty thousand, six hundred sixteen.

Scientific notation

• Scientific notation: 8.1437930616 × 10¹⁰

Factors of 81437930616

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 111

Divisors of 81437930616

• Number of divisors d(n): 384
• Complete list of divisors:
  1 2 3 4 6 7 8 12 14 21 23 24 28 29 42 46 47 49 56 58 69 84 87 92 94 98 116 138 141 147 161 168 174 184 188 196 203 232 276 282 294 322 329 348 376 392 406 483 552 564 588 609 644 658 667 696 812 966 987 1081 1127 1128 1176 1218 1288 1316 1334 1363 1421 1624 1932 1974 2001 2162 2209 2254 2303 2436 2632 2668 2726 2842 3243 3381 3864 3948 4002 4089 4263 4324 4418 4508 4606 4669 4872 5336 5452 5684 6486 6627 6762 6909 7567 7896 8004 8178 8526 8648 8836 9016 9212 9338 9541 10904 11368 12972 13254 13524 13818 14007 15134 15463 16008 16356 17052 17672 18424 18676 19082 22701 25944 26508 27048 27636 28014 28623 30268 30926 31349 32683 32712 34104 37352 38164 45402 46389 50807 52969 53016 55272 56028 57246 60536 61852 62698 64061 65366 66787 76328 90804 92778 94047 98049 101614 103823 105938 108241 112056 114492 123704 125396 128122 130732 133574 152421 158907 181608 185556 188094 192183 196098 200361 203228 207646 211876 216482 219443 228984 250792 256244 261464 267148 304842 311469 317814 324723 355649 371112 376188 384366 392196 400722 406456 415292 423752 432964 438886 448427 512488 534296 609684 622938 635628 649446 658329 711298 726761 752376 768732 784392 801444 830584 865928 877772 896854 1066947 1219368 1245876 1271256 1298892 1316658 1345281 1422596 1453522 1473403 1536101 1537464 1602888 1755544 1793708 2133894 2180283 2387929 2489543 2491752 2597784 2633316 2690562 2845192 2907044 2946806 3010867 3072202 3138989 3587416 4267788 4360566 4420209 4608303 4775858 4979086 5087327 5266632 5381124 5814088 5893612 6021734 6144404 6277978 7163787 7468629 8535576 8721132 8840418 9032601 9216606 9416967 9551716 9958172 10174654 10313821 10762248 11787224 12043468 12288808 12555956 14327574 14937258 15261981 16715503 17442264 17680836 18065202 18433212 18833934 19103432 19916344 20349308 20627642 21076069 24086936 25111912 28655148 29874516 30523962 30941463 33431006 35361672 36130404 36866424 37667868 40698616 41255284 42152138 50146509 57310296 59749032 61047924 61882926 63228207 66862012 69249941 72196747 72260808 75335736 82510568 84304276 100293018 117008521 122095848 123765852 126456414 133724024 138499882 144393494 147532483 168608552 200586036 207749823 216590241 234017042 247531704 252912828 276999764 288786988 295064966 351025563 401172072 415499646 433180482 442597449 468034084 484749587 505825656 553999528 577573976 590129932 702051126 830999292 866360964 885194898 936068168 969499174 1180259864 1404102252 1454248761 1661998584 1732721928 1770389796 1938998348 2808204504 2908497522 3393247109 3540779592 3877996696 5816995044 6786494218 10179741327 11633990088 13572988436 20359482654 27145976872 40718965308 81437930616
• Sum of all divisors σ(n): 261211392000
• Sum of proper divisors (its aliquot sum) s(n): 179773461384
• 81437930616 is an abundant number, because the sum of its proper divisors (179773461384) is greater than itself. Its abundance is 98335530768

Bases of 81437930616

• Binary: 1001011110110000101000011010001111000₂
• Hexadecimal: 0x12F6143478
• Base-36: 11EU1HFC

Squares and roots of 81437930616

• 81437930616 squared (81437930616²) is 6632136543016430139456
• 81437930616 cubed (81437930616³) is 540107475626010137045028931984896
• The square root of 81437930616 is 285373.3179819023
• The cube root of 81437930616 is 4334.5322958705

Scales and comparisons

• 81,437,930,616 seconds is equal to 2,589 years, 24 weeks, 4 days, 15 hours, 23 minutes, 36 seconds.
• To count from 1 to 81,437,930,616 would take you about five thousand, one hundred seventy-eight 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 81437930616 cubic inches would be around 361.2 feet tall.

Recreational maths with 81437930616

• 81437930616 backwards is 61603973418
• The number of decimal digits it has is: 11
• The sum of 81437930616's digits is 48
• More coming soon!