21551371272

Names of 21551371272

• Cardinal: 21551371272 can be written as Twenty-one billion, five hundred fifty-one million, three hundred seventy-one thousand, two hundred seventy-two.

Scientific notation

• Scientific notation: 2.1551371272 × 10¹⁰

Factors of 21551371272

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 157

Divisors of 21551371272

• Number of divisors d(n): 180
• Complete list of divisors:
  1 2 3 4 6 8 9 12 18 24 27 36 54 72 73 79 81 108 146 158 162 216 219 237 292 316 324 438 474 584 632 648 657 711 876 948 1314 1422 1752 1896 1971 2133 2628 2844 3942 4266 5256 5329 5688 5767 5913 6241 6399 7884 8532 10658 11534 11826 12482 12798 15768 15987 17064 17301 18723 21316 23068 23652 24964 25596 31974 34602 37446 42632 46136 47304 47961 49928 51192 51903 56169 63948 69204 74892 95922 103806 112338 127896 138408 143883 149784 155709 168507 191844 207612 224676 287766 311418 337014 383688 415224 420991 431649 449352 455593 467127 505521 575532 622836 674028 841982 863298 911186 934254 1011042 1151064 1245672 1262973 1348056 1366779 1683964 1726596 1822372 1868508 2022084 2525946 2733558 3367928 3453192 3644744 3737016 3788919 4044168 4100337 5051892 5467116 7577838 8200674 10103784 10934232 11366757 12301011 15155676 16401348 22733514 24602022 30311352 32802696 33258289 34100271 36903033 45467028 49204044 66516578 68200542 73806066 90934056 98408088 99774867 133033156 136401084 147612132 199549734 266066312 272802168 295224264 299324601 399099468 598649202 798198936 897973803 1197298404 1795947606 2394596808 2693921409 3591895212 5387842818 7183790424 10775685636 21551371272
• Sum of all divisors σ(n): 61986538845
• Sum of proper divisors (its aliquot sum) s(n): 40435167573
• 21551371272 is an abundant number, because the sum of its proper divisors (40435167573) is greater than itself. Its abundance is 18883796301

Bases of 21551371272

• Binary: 10100000100100011111101010000001000₂
• Hexadecimal: 0x5048FD408
• Base-36: 9WF4OI0

Squares and roots of 21551371272

• 21551371272 squared (21551371272²) is 464461603703586897984
• 21551371272 cubed (21551371272³) is 10009784463004531476567972315648
• The square root of 21551371272 is 146803.8530557015
• The cube root of 21551371272 is 2782.8617801765

Scales and comparisons

• 21,551,371,272 seconds is equal to 685 years, 13 weeks, 6 days, 4 hours, 1 minute, 12 seconds.
• To count from 1 to 21,551,371,272 would take you about one thousand, three hundred seventy 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 21551371272 cubic inches would be around 231.9 feet tall.

Recreational maths with 21551371272

• 21551371272 backwards is 27217315512
• 21551371272 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 21551371272's digits is 36
• More coming soon!