81421099480

Names of 81421099480

• Cardinal: 81421099480 can be written as Eighty-one billion, four hundred twenty-one million, ninety-nine thousand, four hundred eighty.

Scientific notation

• Scientific notation: 8.142109948 × 10¹⁰

Factors of 81421099480

• Number of distinct prime factors ω(n): 8
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 503

Divisors of 81421099480

• Number of divisors d(n): 512
• Complete list of divisors:
  1 2 4 5 7 8 10 14 17 20 28 29 31 34 35 40 53 56 58 62 68 70 85 106 116 119 124 136 140 145 155 170 203 212 217 232 238 248 265 280 290 310 340 359 371 406 424 434 476 493 527 530 580 595 620 680 718 742 812 868 899 901 952 986 1015 1054 1060 1085 1160 1190 1240 1436 1484 1537 1624 1643 1736 1795 1798 1802 1855 1972 2030 2108 2120 2170 2380 2465 2513 2635 2872 2968 3074 3286 3451 3590 3596 3604 3689 3710 3944 4060 4216 4340 4495 4505 4760 4930 5026 5270 6103 6148 6293 6307 6572 6902 7180 7192 7208 7378 7420 7685 8120 8215 8680 8990 9010 9860 10052 10411 10540 10759 11129 11501 12206 12296 12565 12586 12614 13144 13804 14360 14756 14840 15283 15370 16430 17255 17980 18020 18445 19027 19720 20104 20822 21080 21518 22258 23002 24412 25130 25172 25228 26129 27608 27931 29512 30515 30566 30740 31465 31535 32860 34510 35960 36040 36890 38054 41644 42721 43036 44516 46004 47647 48824 50260 50344 50456 52055 52258 53795 55645 55862 57505 61030 61132 61480 62930 63070 65720 69020 72877 73780 76108 76415 77903 83288 85442 86072 89032 92008 95135 95294 100520 104110 104516 106981 107590 111290 111724 115010 122060 122264 125860 126140 130645 133189 138040 139655 145754 147560 152216 152830 155806 170884 176987 182903 189193 190270 190588 195517 208220 209032 213605 213962 215180 222580 223448 230020 238235 244120 251720 252280 261290 266378 279310 291508 305660 311612 322741 323459 333529 341768 353974 364385 365806 378386 380540 381176 389515 391034 416440 427210 427924 430360 445160 460040 476470 522580 532756 534905 551783 558620 583016 589837 611320 623224 645482 646918 665945 667058 707948 728770 731612 756772 761080 779030 782068 809999 854420 855848 884935 914515 945965 952940 977585 1045160 1065512 1069810 1103566 1117240 1179674 1238909 1290964 1293836 1324351 1331890 1334116 1415896 1457540 1463224 1513544 1558060 1564136 1613705 1617295 1619998 1667645 1708840 1769870 1829030 1891930 1905880 1955170 2139620 2207132 2259187 2264213 2359348 2477818 2581928 2587672 2648702 2663780 2668232 2758915 2915080 2949185 3116120 3227410 3234590 3239996 3335290 3539740 3658060 3783860 3862481 3910340 4049995 4128859 4279240 4414264 4518374 4528426 4718696 4955636 5297404 5327560 5486597 5517830 5669993 5898370 6194545 6454820 6469180 6479992 6621755 6670580 7079480 7316120 7567720 7724962 7820680 8099990 8257718 9036748 9056852 9380311 9911272 10027229 10594808 10973194 11035660 11295935 11321065 11339986 11796740 12389090 12909640 12938360 13243510 13341160 15449924 16199980 16515436 17105273 18073496 18113704 18760622 19312405 20054458 20644295 21946388 22071320 22591870 22642130 22679972 23593480 24778180 26487020 27432985 28349965 30899848 32399960 33030872 34210546 37521244 38406179 38624810 40108916 41288590 43892776 45183740 45284260 45359944 46901555 49556360 50136145 52974040 54865970 56699930 65662177 68421092 70190603 75042488 76812358 77249620 80217832 82577180 85526365 90367480 90568520 93803110 100272290 109731940 113399860 119736911 131324354 136842184 140381206 153624716 154499240 165154360 171052730 187606220 192030895 200544580 219463880 226799720 239473822 262648708 280762412 290789641 307249432 328310885 342105460 350953015 375212440 384061790 401089160 478947644 525297416 561524824 581579282 598684555 656621770 684210920 701906030 768123580 957895288 1163158564 1197369110 1313243540 1403812060 1453948205 1536247160 2035527487 2326317128 2394738220 2626487080 2807624120 2907896410 4071054974 4789476440 5815792820 8142109948 10177637435 11631585640 16284219896 20355274870 40710549740 81421099480
• Sum of all divisors σ(n): 241864704000
• Sum of proper divisors (its aliquot sum) s(n): 160443604520
• 81421099480 is an abundant number, because the sum of its proper divisors (160443604520) is greater than itself. Its abundance is 79022505040

Bases of 81421099480

• Binary: 1001011110101000100110110000111011000₂
• Hexadecimal: 0x12F51361D8
• Base-36: 11EK0QFS

Squares and roots of 81421099480

• 81421099480 squared (81421099480²) is 6629395440532056270400
• 81421099480 cubed (81421099480³) is 539772665655818977721196179392000
• The square root of 81421099480 is 285343.8267774511
• The cube root of 81421099480 is 4334.2336629993

Scales and comparisons

• 81,421,099,480 seconds is equal to 2,588 years, 48 weeks, 5 days, 20 hours, 4 minutes, 40 seconds.
• To count from 1 to 81,421,099,480 would take you about five thousand, one hundred seventy-seven 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 81421099480 cubic inches would be around 361.2 feet tall.

Recreational maths with 81421099480

• 81421099480 backwards is 08499012418
• The number of decimal digits it has is: 11
• The sum of 81421099480's digits is 46
• More coming soon!