155438778126645

Names of 155438778126645

• Cardinal: 155438778126645 can be written as One hundred fifty-five trillion, four hundred thirty-eight billion, seven hundred seventy-eight million, one hundred twenty-six thousand, six hundred forty-five.

Scientific notation

• Scientific notation: 1.55438778126645 × 10¹⁴

Factors of 155438778126645

• Number of distinct prime factors ω(n): 7
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 797585

Divisors of 155438778126645

• Number of divisors d(n): 192
• Complete list of divisors:
  1 3 5 9 13 15 19 39 45 53 57 65 95 117 159 171 195 247 265 285 331 477 585 689 741 795 855 993 1007 1235 1655 2067 2223 2385 2979 3021 3445 3705 4303 4965 5035 6201 6289 9063 10335 11115 12909 13091 14895 15105 17543 18867 21515 31005 31445 38727 39273 45315 52629 56601 64545 65455 81757 87715 94335 117819 157887 193635 196365 228059 245271 263145 283005 333317 408785 589095 684177 735813 789435 797161 999951 1140295 1226355 1666585 2052531 2391483 2999853 3420885 3679065 3985805 4333121 4999755 7174449 10262655 10363093 11957415 12999363 14999265 15146059 21665605 31089279 35872245 38998089 42249533 45438177 51815465 64996815 75730295 93267837 126748599 136314531 155446395 194990445 196898767 211247665 227190885 263860291 380245797 466339185 549243929 590696301 633742995 681572655 791580873 802741127 984493835 1319301455 1647731787 1772088903 1901228985 2374742619 2408223381 2746219645 2953481505 3430183783 3957904365 4013705635 4943195361 5013345529 7224670143 8238658935 8860444515 10290551349 10435634651 11873713095 12041116905 13984595423 15040036587 17150918915 24715976805 25066727645 30871654047 31306903953 36123350715 41953786269 45120109761 51452756745 52178173255 65173491877 69922977115 75200182935 93920711859 125861358807 154358270235 156534519765 181799740499 195520475631 209768931345 225600548805 265707313037 325867459385 469603559295 545399221497 586561426893 629306794035 797121939111 908998702495 977602378155 1328536565185 1636197664491 2391365817333 2726996107485 2932807134465 3454195069481 3985609695555 8180988322455 10362585208443 11956829086665 17270975347405 31087755625329 51812926042215 155438778126645
• Sum of all divisors σ(n): 312126804138240
• Sum of proper divisors (its aliquot sum) s(n): 156688026011595
• 155438778126645 is an abundant number, because the sum of its proper divisors (156688026011595) is greater than itself. Its abundance is 1249247884950

Bases of 155438778126645

• Binary: 100011010101111011101001001001111001000100110101₂
• Hexadecimal: 0x8D5EE9279135
• Base-36: 1J3JL76PF9

Squares and roots of 155438778126645

• 155438778126645 squared (155438778126645²) is 24161213745504372095658956025
• 155438778126645 cubed (155438778126645³) is 3755589542657899507005928433336465935786125
• The square root of 155438778126645 is 12467508.8981979475
• The cube root of 155438778126645 is 53767.4934948835

Scales and comparisons

• 155,438,778,126,645 seconds is equal to 4,942,472 years, 17 weeks, 5 days, 30 minutes, 45 seconds.
• To count from 1 to 155,438,778,126,645 would take you about twelve million, three hundred fifty-six thousand, one hundred eighty 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 155438778126645 cubic inches would be around 4480.6 feet tall.

Recreational maths with 155438778126645

• 155438778126645 backwards is 546621877834551
• The number of decimal digits it has is: 15
• The sum of 155438778126645's digits is 72
• More coming soon!