81189460809792

Names of 81189460809792

• Cardinal: 81189460809792 can be written as Eighty-one trillion, one hundred eighty-nine billion, four hundred sixty million, eight hundred nine thousand, seven hundred ninety-two.

Scientific notation

• Scientific notation: 8.1189460809792 × 10¹³

Factors of 81189460809792

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 12
• Sum of prime factors: 4237661

Divisors of 81189460809792

• Number of divisors d(n): 336
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 29 31 32 36 37 48 58 62 64 72 74 87 93 96 111 116 124 144 148 174 186 192 222 232 248 261 279 288 296 333 348 372 444 464 496 522 558 576 592 666 696 744 888 899 928 992 1044 1073 1116 1147 1184 1332 1392 1488 1776 1798 1856 1984 2088 2146 2232 2294 2368 2664 2697 2784 2976 3219 3441 3552 3596 4176 4292 4464 4588 5328 5394 5568 5952 6438 6882 7104 7192 8091 8352 8584 8928 9176 9657 10323 10656 10788 12876 13764 14384 16182 16704 17168 17856 18352 19314 20646 21312 21576 25752 27528 28768 32364 33263 34336 36704 38628 41292 43152 51504 55056 57536 64728 66526 68672 73408 77256 82584 86304 99789 103008 110112 129456 133052 154512 165168 172608 199578 206016 220224 258912 266104 299367 309024 330336 399156 517824 532208 598734 618048 660672 798312 1064416 1197468 1596624 2128832 2394936 3193248 4237559 4789872 6386496 8475118 9579744 12712677 16950236 19159488 25425354 33900472 38138031 50850708 67800944 76276062 101701416 122889211 131364329 135601888 152552124 156789683 203402832 245778422 262728658 271203776 305104248 313579366 368667633 394092987 406805664 470369049 491556844 525457316 610208496 627158732 737335266 788185974 813611328 940738098 983113688 1050914632 1106002899 1182278961 1220416992 1254317464 1411107147 1474670532 1576371948 1881476196 1966227376 2101829264 2212005798 2364557922 2440833984 2508634928 2822214294 2949341064 3152743896 3762952392 3809565541 3932454752 4203658528 4424011596 4546900807 4729115844 4860480173 5017269856 5644428588 5898682128 6305487792 7525904784 7619131082 7864909504 8407317056 8848023192 9093801614 9458231688 9720960346 10034539712 11288857176 11428696623 11797364256 12610975584 13640702421 14581440519 15051809568 15238262164 17696046384 18187603228 18916463376 19441920692 22577714352 22857393246 23594728512 25221951168 27281404842 29162881038 30103619136 30476524328 34286089869 35392092768 36375206456 37832926752 38883841384 40922107263 43744321557 45155428704 45714786492 54562809684 58325762076 60953048656 68572179738 70784185536 72750412912 75665853504 77767682768 81844214526 87488643114 90310857408 91429572984 109125619368 116651524152 121906097312 137144359476 140953925017 145500825824 155535365536 163688429052 174977286228 182859145968 218251238736 233303048304 243812194624 274288718952 281907850034 291001651648 311070731072 327376858104 349954572456 365718291936 422861775051 436502477472 466606096608 548577437904 563815700068 654753716208 699909144912 731436583872 845723550102 873004954944 933212193216 1097154875808 1127631400136 1268585325153 1309507432416 1399818289824 1691447100204 2194309751616 2255262800272 2537170650306 2619014864832 2799636579648 3382894200408 4510525600544 5074341300612 6765788400816 9021051201088 10148682601224 13531576801632 20297365202448 27063153603264 40594730404896 81189460809792
• Sum of all divisors σ(n): 255221797708800
• Sum of proper divisors (its aliquot sum) s(n): 174032336899008
• 81189460809792 is an abundant number, because the sum of its proper divisors (174032336899008) is greater than itself. Its abundance is 92842876089216

Bases of 81189460809792

• Binary: 10010011101011101100100111110001001100001000000₂
• Hexadecimal: 0x49D764F89840
• Base-36: SS1X8PSG0

Squares and roots of 81189460809792

• 81189460809792 squared (81189460809792²) is 6591728546584751040403083264
• 81189460809792 cubed (81189460809792³) is 535178886501729824400723227049291042521088
• The square root of 81189460809792 is 9010519.4528280111
• The cube root of 81189460809792 is 43301.1953810929

Scales and comparisons

• 81,189,460,809,792 seconds is equal to 2,581,573 years, 37 weeks, 2 days, 10 hours, 43 minutes, 12 seconds.
• To count from 1 to 81,189,460,809,792 would take you about six million, four hundred fifty-three thousand, nine hundred thirty-four 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 81189460809792 cubic inches would be around 3608.4 feet tall.

Recreational maths with 81189460809792

• 81189460809792 backwards is 29790806498118
• 81189460809792 is a Harshad number.
• The number of decimal digits it has is: 14
• The sum of 81189460809792's digits is 72
• More coming soon!