21378575681779968

Names of 21378575681779968

• Cardinal: 21378575681779968 can be written as Twenty-one quadrillion, three hundred seventy-eight trillion, five hundred seventy-five billion, six hundred eighty-one million, seven hundred seventy-nine thousand, nine hundred sixty-eight.

Scientific notation

• Scientific notation: 2.1378575681779968 × 10¹⁶

Factors of 21378575681779968

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 14
• Sum of prime factors: 229025

Divisors of 21378575681779968

• Number of divisors d(n): 216
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 59 64 72 96 108 118 128 144 177 192 216 236 256 288 354 384 432 472 531 576 708 768 864 944 1062 1152 1416 1593 1728 1888 2124 2304 2832 3186 3456 3776 4248 5664 6372 6912 7552 8496 11328 12744 15104 16992 22656 25488 33984 45312 50976 67968 101952 135936 203904 228961 407808 457922 686883 915844 1373766 1831688 2060649 2747532 3663376 4121298 5495064 6181947 7326752 8242596 10990128 12363894 13508699 14653504 16485192 21980256 24727788 27017398 29307008 32970384 40526097 43960512 49455576 54034796 58614016 65940768 81052194 87921024 98911152 108069592 121578291 131881536 162104388 175842048 197822304 216139184 243156582 263763072 324208776 364734873 395644608 432278368 486313164 527526144 648417552 729469746 791289216 864556736 972626328 1296835104 1458939492 1582578432 1729113472 1945252656 2593670208 2917878984 3458226944 3890505312 5187340416 5835757968 7781010624 10374680832 11671515936 15562021248 23343031872 31124042496 46686063744 52423139521 93372127488 104846279042 157269418563 209692558084 314538837126 419385116168 471808255689 629077674252 838770232336 943616511378 1258155348504 1415424767067 1677540464672 1887233022756 2516310697008 2830849534134 3092965231739 3355080929344 3774466045512 5032621394016 5661699068268 6185930463478 6710161858688 7548932091024 9278895695217 10065242788032 11323398136536 12371860926956 13420323717376 15097864182048 18557791390434 20130485576064 22646796273072 24743721853912 27836687085651 30195728364096 37115582780868 40260971152128 45293592546144 49487443707824 55673374171302 60391456728192 74231165561736 83510061256953 90587185092288 98974887415648 111346748342604 120782913456384 148462331123472 167020122513906 181174370184576 197949774831296 222693496685208 296924662246944 334040245027812 362348740369152 395899549662592 445386993370416 593849324493888 668080490055624 791799099325184 890773986740832 1187698648987776 1336160980111248 1781547973481664 2375397297975552 2672321960222496 3563095946963328 5344643920444992 7126191893926656 10689287840889984 21378575681779968
• Sum of all divisors σ(n): 64292019107551200
• Sum of proper divisors (its aliquot sum) s(n): 42913443425771232
• 21378575681779968 is an abundant number, because the sum of its proper divisors (42913443425771232) is greater than itself. Its abundance is 21534867743991264

Bases of 21378575681779968

• Binary: 1001011111100111011001110001001010100001111100100000000₂
• Hexadecimal: 0x4BF3B38950F900
• Base-36: 5UI2M32GQO0

Squares and roots of 21378575681779968

• 21378575681779968 squared (21378575681779968²) is 457043498181593823595124766081024
• 21378575681779968 cubed (21378575681779968³) is 9770939015740668742120239685702435635528028127232
• The square root of 21378575681779968 is 146214143.2344353205
• The cube root of 21378575681779968 is 277540.4293849019

Scales and comparisons

• 21,378,575,681,779,968 seconds is equal to 679,772,578 years, 21 weeks, 2 hours, 52 minutes, 48 seconds.
• To count from 1 to 21,378,575,681,779,968 would take you about two billion, thirty-nine million, three hundred seventeen thousand, seven hundred thirty-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 21378575681779968 cubic inches would be around 23128.4 feet tall.

Recreational maths with 21378575681779968

• 21378575681779968 backwards is 86997718657587312
• The number of decimal digits it has is: 17
• The sum of 21378575681779968's digits is 99
• More coming soon!