81712345120

Names of 81712345120

• Cardinal: 81712345120 can be written as Eighty-one billion, seven hundred twelve million, three hundred forty-five thousand, one hundred twenty.

Scientific notation

• Scientific notation: 8.171234512 × 10¹⁰

Factors of 81712345120

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 2941

Divisors of 81712345120

• Number of divisors d(n): 288
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 32 35 37 40 49 56 70 74 80 98 101 112 140 148 160 185 196 202 224 245 259 280 296 370 392 404 490 505 518 560 592 707 740 784 808 980 1010 1036 1120 1184 1295 1414 1480 1568 1616 1813 1960 2020 2072 2590 2789 2828 2960 3232 3535 3626 3737 3920 4040 4144 4949 5180 5578 5656 5920 7070 7252 7474 7840 8080 8288 9065 9898 10360 11156 11312 13945 14140 14504 14948 16160 18130 18685 19523 19796 20720 22312 22624 24745 26159 27890 28280 29008 29896 36260 37370 39046 39592 41440 44624 49490 52318 55780 56560 58016 59792 72520 74740 78092 79184 89248 97615 98980 103193 104636 111560 113120 119584 130795 136661 145040 149480 156184 158368 183113 195230 197960 206386 209272 223120 261590 273322 281689 290080 298960 312368 366226 390460 395920 412772 418544 446240 515965 523180 546644 563378 597920 624736 683305 722351 732452 780920 791840 825544 837088 915565 1031930 1046360 1093288 1126756 1366610 1408445 1444702 1464904 1561840 1651088 1831130 1971823 2063860 2092720 2186576 2253512 2733220 2816890 2889404 2929808 3123680 3302176 3611755 3662260 3943646 4127720 4185440 4373152 4507024 5056457 5466440 5633780 5778808 5859616 7223510 7324520 7887292 8255440 9014048 9859115 10112914 10422493 10932880 11267560 11557616 13802761 14447020 14649040 15774584 16510880 19718230 20225828 20844986 21865760 22535120 23115232 25282285 27605522 28894040 29298080 31549168 39436460 40451656 41689972 45070240 50564570 52112465 55211044 57788080 63098336 69013805 72957451 78872920 80903312 83379944 101129140 104224930 110422088 115576160 138027610 145914902 157745840 161806624 166759888 202258280 208449860 220844176 276055220 291829804 315491680 333519776 364787255 404516560 416899720 441688352 510702157 552110440 583659608 729574510 809033120 833799440 1021404314 1104220880 1167319216 1459149020 1667598880 2042808628 2208441760 2334638432 2553510785 2918298040 4085617256 5107021570 5836596080 8171234512 10214043140 11673192160 16342469024 20428086280 40856172560 81712345120
• Sum of all divisors σ(n): 232999305840
• Sum of proper divisors (its aliquot sum) s(n): 151286960720
• 81712345120 is an abundant number, because the sum of its proper divisors (151286960720) is greater than itself. Its abundance is 69574615600

Bases of 81712345120

• Binary: 1001100000110011011110111000000100000₂
• Hexadecimal: 0x13066F7020
• Base-36: 11JDF50G

Squares and roots of 81712345120

• 81712345120 squared (81712345120²) is 6676907345009987814400
• 81712345120 cubed (81712345120³) is 545585757309719034137247305728000
• The square root of 81712345120 is 285853.7127972977
• The cube root of 81712345120 is 4339.3954065879

Scales and comparisons

• 81,712,345,120 seconds is equal to 2,598 years, 10 weeks, 2 days, 17 hours, 38 minutes, 40 seconds.
• To count from 1 to 81,712,345,120 would take you about five thousand, one hundred ninety-six 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 81712345120 cubic inches would be around 361.6 feet tall.

Recreational maths with 81712345120

• 81712345120 backwards is 02154321718
• The number of decimal digits it has is: 11
• The sum of 81712345120's digits is 34
• More coming soon!