161645812418720

Names of 161645812418720

• Cardinal: 161645812418720 can be written as One hundred sixty-one trillion, six hundred forty-five billion, eight hundred twelve million, four hundred eighteen thousand, seven hundred twenty.

Scientific notation

• Scientific notation: 1.6164581241872 × 10¹⁴

Factors of 161645812418720

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 10
• Sum of prime factors: 2172759

Divisors of 161645812418720

• Number of divisors d(n): 192
• Complete list of divisors:
  1 2 4 5 7 8 10 14 16 20 28 29 32 35 40 56 58 70 80 112 116 140 145 160 203 224 232 280 290 406 464 560 580 812 928 1015 1120 1160 1624 2030 2293 2320 3248 4060 4586 4640 6496 8120 9172 11465 16051 16240 18344 22930 32102 32480 36688 45860 64204 66497 73376 80255 91720 128408 132994 160510 183440 256816 265988 321020 332485 366880 465479 513632 531976 642040 664970 930958 1063952 1284080 1329940 1861916 2127904 2170423 2327395 2568160 2659880 3723832 4340846 4654790 5319760 7447664 8681692 9309580 10639520 10852115 14895328 15192961 17363384 18619160 21704230 30385922 34726768 37238320 43408460 60771844 62942267 69453536 74476640 75964805 86816920 121543688 125884534 151929610 173633840 243087376 251769068 303859220 314711335 347267680 440595869 486174752 503538136 607718440 629422670 881191738 1007076272 1215436880 1258845340 1762383476 2014152544 2202979345 2430873760 2517690680 3524766952 4405958690 4976779939 5035381360 7049533904 8811917380 9953559878 10070762720 14099067808 17623834760 19907119756 24883899695 34837459573 35247669520 39814239512 49767799390 69674919146 70495339040 79628479024 99535598780 139349838292 144326618231 159256958048 174187297865 199071197560 278699676584 288653236462 348374595730 398142395120 557399353168 577306472924 696749191460 721633091155 796284790240 1010286327617 1114798706336 1154612945848 1393498382920 1443266182310 2020572655234 2309225891696 2786996765840 2886532364620 4041145310468 4618451783392 5051431638085 5573993531680 5773064729240 8082290620936 10102863276170 11546129458480 16164581241872 20205726552340 23092258916960 32329162483744 40411453104680 80822906209360 161645812418720
• Sum of all divisors σ(n): 451690584952320
• Sum of proper divisors (its aliquot sum) s(n): 290044772533600
• 161645812418720 is an abundant number, because the sum of its proper divisors (290044772533600) is greater than itself. Its abundance is 128398960114880

Bases of 161645812418720

• Binary: 100100110000010000011001001110101000100010100000₂
• Hexadecimal: 0x9304193A88A0
• Base-36: 1LAR27557K

Squares and roots of 161645812418720

• 161645812418720 squared (161645812418720²) is 26129368672508012976606438400
• 161645812418720 cubed (161645812418720³) is 4223703027055809084662639933160628686848000
• The square root of 161645812418720 is 12714000.6456944935
• The cube root of 161645812418720 is 54473.8603057779

Scales and comparisons

• 161,645,812,418,720 seconds is equal to 5,139,836 years, 43 weeks, 1 day, 16 hours, 45 minutes, 20 seconds.
• To count from 1 to 161,645,812,418,720 would take you about twelve million, eight hundred forty-nine thousand, five hundred ninety-two 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 161645812418720 cubic inches would be around 4539.5 feet tall.

Recreational maths with 161645812418720

• 161645812418720 backwards is 027814218546161
• 161645812418720 is a Harshad number.
• The number of decimal digits it has is: 15
• The sum of 161645812418720's digits is 56
• More coming soon!