81376130560

Names of 81376130560

• Cardinal: 81376130560 can be written as Eighty-one billion, three hundred seventy-six million, one hundred thirty thousand, five hundred sixty.

Scientific notation

• Scientific notation: 8.137613056 × 10¹⁰

Factors of 81376130560

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 605

Divisors of 81376130560

• Number of divisors d(n): 320
• Complete list of divisors:
  1 2 4 5 8 10 16 19 20 32 37 38 40 64 74 76 80 95 103 128 148 152 160 185 190 206 256 296 304 320 370 380 412 439 512 515 592 608 640 703 740 760 824 878 1030 1184 1216 1280 1406 1480 1520 1648 1756 1957 2060 2195 2368 2432 2560 2812 2960 3040 3296 3512 3515 3811 3914 4120 4390 4736 4864 5624 5920 6080 6592 7024 7030 7622 7828 8240 8341 8780 9472 9728 9785 11248 11840 12160 13184 14048 14060 15244 15656 16243 16480 16682 17560 18944 19055 19570 22496 23680 24320 26368 28096 28120 30488 31312 32486 32960 33364 35120 38110 39140 41705 44992 45217 47360 48640 52736 56192 56240 60976 62624 64972 65920 66728 70240 72409 76220 78280 81215 83410 89984 90434 94720 112384 112480 121952 125248 129944 131840 133456 140480 144818 152440 156560 162430 166820 179968 180868 224768 224960 226085 243904 250496 259888 263680 266912 280960 289636 304880 308617 313120 324860 333640 359936 361736 362045 449920 452170 487808 500992 519776 533824 561920 579272 609760 617234 626240 649720 667280 723472 724090 859123 899840 904340 975616 1001984 1039552 1067648 1123840 1158544 1219520 1234468 1252480 1299440 1334560 1446944 1448180 1543085 1673029 1718246 1799680 1808680 1951232 2079104 2135296 2317088 2439040 2468936 2504960 2598880 2669120 2893888 2896360 3086170 3346058 3436492 3617360 4158208 4270592 4295615 4634176 4878080 4937872 5009920 5197760 5338240 5787776 5792720 6172340 6692116 6872984 7234720 8316416 8365145 8591230 9268352 9756160 9875744 10395520 10676480 11575552 11585440 12344680 13384232 13745968 14469440 16730290 17182460 18536704 19751488 20791040 21352960 23151104 23170880 24689360 26768464 27491936 28938880 31787551 33460580 34364920 37073408 39502976 41582080 46341760 49378720 53536928 54983872 57877760 63575102 66921160 68729840 79005952 92683520 98757440 107073856 109967744 115755520 127150204 133842320 137459680 158011904 158937755 185367040 197514880 214147712 219935488 254300408 267684640 274919360 317875510 395029760 428295424 439870976 508600816 535369280 549838720 635751020 790059520 856590848 1017201632 1070738560 1099677440 1271502040 2034403264 2141477120 2199354880 2543004080 4068806528 4282954240 5086008160 8137613056 10172016320 16275226112 20344032640 40688065280 81376130560
• Sum of all divisors σ(n): 213464908800
• Sum of proper divisors (its aliquot sum) s(n): 132088778240
• 81376130560 is an abundant number, because the sum of its proper divisors (132088778240) is greater than itself. Its abundance is 50712647680

Bases of 81376130560

• Binary: 1001011110010011001010011011000000000₂
• Hexadecimal: 0x12F2653600
• Base-36: 11DT8W74

Squares and roots of 81376130560

• 81376130560 squared (81376130560²) is 6622074624918165913600
• 81376130560 cubed (81376130560³) is 538878809255403698700855279616000
• The square root of 81376130560 is 285265.0181147349
• The cube root of 81376130560 is 4333.4355828077

Scales and comparisons

• 81,376,130,560 seconds is equal to 2,587 years, 26 weeks, 3 days, 8 hours, 42 minutes, 40 seconds.
• To count from 1 to 81,376,130,560 would take you about five thousand, one hundred seventy-five 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 81376130560 cubic inches would be around 361.1 feet tall.

Recreational maths with 81376130560

• 81376130560 backwards is 06503167318
• 81376130560 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 81376130560's digits is 40
• More coming soon!