21531297019840

Names of 21531297019840

• Cardinal: 21531297019840 can be written as Twenty-one trillion, five hundred thirty-one billion, two hundred ninety-seven million, nineteen thousand, eight hundred forty.

Scientific notation

• Scientific notation: 2.153129701984 × 10¹³

Factors of 21531297019840

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 15769036

Divisors of 21531297019840

• Number of divisors d(n): 112
• Complete list of divisors:
  1 2 4 5 8 10 16 17 20 32 34 40 64 68 80 85 136 160 170 251 272 320 340 502 544 680 1004 1088 1255 1360 2008 2510 2720 4016 4267 5020 5440 8032 8534 10040 16064 17068 20080 21335 34136 40160 42670 68272 80320 85340 136544 170680 273088 341360 682720 1365440 15768761 31537522 63075044 78843805 126150088 157687610 252300176 268068937 315375220 504600352 536137874 630750440 1009200704 1072275748 1261500880 1340344685 2144551496 2523001760 2680689370 3957959011 4289102992 5046003520 5361378740 7915918022 8578205984 10722757480 15831836044 17156411968 19789795055 21445514960 31663672088 39579590110 42891029920 63327344176 67285303187 79159180220 85782059840 126654688352 134570606374 158318360440 253309376704 269141212748 316636720880 336426515935 538282425496 633273441760 672853031870 1076564850992 1266546883520 1345706063740 2153129701984 2691412127480 4306259403968 5382824254960 10765648509920 21531297019840
• Sum of all divisors σ(n): 54503653577184
• Sum of proper divisors (its aliquot sum) s(n): 32972356557344
• 21531297019840 is an abundant number, because the sum of its proper divisors (32972356557344) is greater than itself. Its abundance is 11441059537504

Bases of 21531297019840

• Binary: 100111001010100100101010011110111011111000000₂
• Hexadecimal: 0x1395254F77C0
• Base-36: 7MRCABNWG

Squares and roots of 21531297019840

• 21531297019840 squared (21531297019840²) is 463596751356570865353625600
• 21531297019840 cubed (21531297019840³) is 9981839350891239750390288789019131904000
• The square root of 21531297019840 is 4640182.8649138387
• The cube root of 21531297019840 is 27819.9746977491

Scales and comparisons

• 21,531,297,019,840 seconds is equal to 684,628 years, 33 weeks, 3 days, 14 hours, 50 minutes, 40 seconds.
• To count from 1 to 21,531,297,019,840 would take you about one million, seven hundred eleven thousand, five hundred seventy-one 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 21531297019840 cubic inches would be around 2318.3 feet tall.

Recreational maths with 21531297019840

• 21531297019840 backwards is 04891079213512
• The number of decimal digits it has is: 14
• The sum of 21531297019840's digits is 52
• More coming soon!