78438872737331649

Names of 78438872737331649

• Cardinal: 78438872737331649 can be written as Seventy-eight quadrillion, four hundred thirty-eight trillion, eight hundred seventy-two billion, seven hundred thirty-seven million, three hundred thirty-one thousand, six hundred forty-nine.

Scientific notation

• Scientific notation: 7.8438872737331649 × 10¹⁶

Factors of 78438872737331649

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 28
• Sum of prime factors: 51

Divisors of 78438872737331649

• Number of divisors d(n): 225
• Complete list of divisors:
  1 3 9 17 27 31 51 81 93 153 243 279 289 459 527 729 837 867 961 1377 1581 2187 2511 2601 2883 4131 4743 6561 7533 7803 8649 8959 12393 14229 16337 19683 22599 23409 25947 26877 37179 42687 49011 59049 67797 70227 77841 80631 111537 128061 147033 177147 203391 210681 233523 241893 277729 334611 384183 441099 531441 610173 632043 700569 725679 833187 1003833 1152549 1323297 1594323 1830519 1896129 2101707 2177037 2499561 3011499 3457647 3969891 4782969 5491557 5688387 6305121 6531111 7498683 9034497 10372941 11909673 14348907 16474671 17065161 18915363 19593333 22496049 27103491 31118823 35729019 43046721 49424013 51195483 56746089 58779999 67488147 81310473 93356469 107187057 129140163 148272039 153586449 170238267 176339997 202464441 243931419 280069407 321561171 387420489 444816117 460759347 510714801 529019991 607393323 731794257 840208221 964683513 1162261467 1334448351 1382278041 1532144403 1587059973 1822179969 2195382771 2520624663 2894050539 3486784401 4003345053 4146834123 4596433209 4761179919 5466539907 6586148313 7561873989 8682151617 10460353203 12010035159 12440502369 13789299627 14283539757 16399619721 19758444939 22685621967 26046454851 31381059609 36030105477 37321507107 41367898881 42850619271 49198859163 59275334817 68056865901 78139364553 94143178827 108090316431 111964521321 124103696643 128551857813 147596577489 177826004451 204170597703 234418093659 282429536481 324270949293 335893563963 372311089929 385655573439 442789732467 533478013353 612511793109 703254280977 972812847879 1007680691889 1116933269787 1156966720317 1328369197401 1600434040059 1837535379327 2109762842931 2918438543637 3023042075667 3350799809361 3470900160951 3985107592203 4801302120177 5512606137981 6329288528793 8755315630911 9069126227001 10052399428083 10412700482853 11955322776609 16537818413943 18987865586379 27207378681003 30157198284249 31238101448559 35865968329827 49613455241829 56963596759137 81622136043009 90471594852747 93714304345677 107597904989481 148840365725487 170890790277411 271414784558241 281142913037031 322793714968443 512672370832233 843428739111093 968381144905329 1538017112496699 2530286217333279 2905143434715987 4614051337490097 8715430304147961 26146290912443883 78438872737331649
• Sum of all divisors σ(n): 129148389938501571
• Sum of proper divisors (its aliquot sum) s(n): 50709517201169922
• 78438872737331649 is a deficient number, because the sum of its proper divisors (50709517201169922) is less than itself. Its deficiency is 27729355536161727

Bases of 78438872737331649

• Binary: 100010110101010111011110100111010000101110011100111000001₂
• Hexadecimal: 0x116ABBD3A1739C1
• Base-36: LGC9COC4N29

Squares and roots of 78438872737331649

• 78438872737331649 squared (78438872737331649²) is 6152656756303310218577816617059201
• 78438872737331649 cubed (78438872737331649³) is 482607460304159095267428247287511644737134203952449
• 78438872737331649 is a perfect square number. Its square root is 280069407
• The cube root of 78438872737331649 is 428065.7175148471

Scales and comparisons

• 78,438,872,737,331,649 seconds is equal to 2,494,113,525 years, 35 weeks, 3 days, 17 hours, 54 minutes, 9 seconds.
• To count from 1 to 78,438,872,737,331,649 would take you about seven billion, four hundred eighty-two million, three hundred forty thousand, five 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 78438872737331649 cubic inches would be around 35672.1 feet tall.

Recreational maths with 78438872737331649

• 78438872737331649 backwards is 94613373727883487
• The number of decimal digits it has is: 17
• The sum of 78438872737331649's digits is 90
• More coming soon!