155445380181

Names of 155445380181

• Cardinal: 155445380181 can be written as One hundred fifty-five billion, four hundred forty-five million, three hundred eighty thousand, one hundred eighty-one.

Scientific notation

• Scientific notation: 1.55445380181 × 10¹¹

Factors of 155445380181

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 120

Divisors of 155445380181

• Number of divisors d(n): 384
• Complete list of divisors:
  1 3 7 9 13 17 19 21 27 39 51 57 61 63 91 117 119 133 153 169 171 183 189 221 247 273 323 351 357 361 399 427 459 507 513 549 663 741 793 819 969 1037 1071 1083 1159 1183 1197 1281 1521 1547 1647 1729 1989 2197 2223 2261 2379 2457 2527 2873 2907 3111 3211 3213 3249 3477 3549 3591 3843 4199 4563 4641 4693 5187 5551 5967 6137 6591 6669 6783 7137 7259 7581 8113 8619 8721 9333 9633 9747 10309 10431 10647 11529 12597 13481 13923 14079 15067 15379 15561 16653 18411 19703 19773 20111 20349 21411 21777 22021 22477 22743 24339 25857 27999 28899 29393 30927 31293 31941 32851 37349 37791 40443 41743 41769 42237 42959 45201 46137 46683 49959 54587 55233 59109 59319 60333 61009 61047 65331 66063 67431 68229 72163 73017 77571 79781 86697 88179 92781 94367 98553 105469 112047 113373 121329 125229 126711 128877 134017 135603 137921 138411 149877 154147 163761 165699 175253 177327 180999 183027 195871 195993 198189 202293 216489 219051 239343 256139 261443 264537 278343 283101 286273 292201 295659 316407 336141 363987 374357 375687 382109 386631 402051 406809 413763 415233 427063 462441 491283 525759 531981 542997 549081 558467 587613 594567 606879 649467 709631 718029 768417 784329 793117 793611 849303 858819 876603 886977 938119 949221 1008423 1037153 1123071 1127061 1146327 1159893 1206153 1226771 1241289 1281189 1371097 1387323 1473849 1577277 1647243 1675401 1762839 1792973 1948401 2003911 2128893 2154087 2278289 2305251 2352987 2379351 2546323 2547909 2576457 2620499 2629809 2814357 2847663 3111459 3329807 3369213 3438981 3618459 3680313 3721549 3723867 3843567 4113291 4161969 4731831 4866641 4967417 5026203 5288517 5378919 5551819 6011733 6386679 6834867 6915753 7058961 7138053 7260071 7638969 7729371 7861497 7889427 8443071 9334377 9989421 10107639 10316943 11040939 11164647 11530701 12339873 13482989 14599923 14902251 15078609 15948023 16136757 16655457 17824261 18035199 19160037 20504601 21414159 21780213 22916907 23308649 23584491 25329213 26050843 28003131 29968263 33122817 33493941 34066487 37019619 40448967 43287491 43799769 44706753 47844069 48380137 48410271 49966371 53472783 54105597 61513803 63266333 65340639 68750721 69925947 70753473 78152529 89904789 94380923 100481823 102199461 121346901 129862473 131399307 134120259 143532207 145140411 149899113 160418349 189798999 196021917 209777841 234457587 283142769 303012437 306598383 338660959 364040703 389587419 430596621 435421233 442864331 481255047 569396997 629333523 703372761 822462329 849428307 909037311 919795149 1015982877 1168762257 1306263699 1328592993 1708190991 2467386987 2548284921 2727111933 3047948631 3985778979 5757236303 7402160961 8181335799 9143845893 11957336937 17271708909 22206482883 51815126727 155445380181
• Sum of all divisors σ(n): 323829273600
• Sum of proper divisors (its aliquot sum) s(n): 168383893419
• 155445380181 is an abundant number, because the sum of its proper divisors (168383893419) is greater than itself. Its abundance is 12938513238

Bases of 155445380181

• Binary: 10010000110001010001000100010001010101₂
• Hexadecimal: 0x2431444455
• Base-36: 1ZES5YZ9

Squares and roots of 155445380181

• 155445380181 squared (155445380181²) is 24163266219615627592761
• 155445380181 cubed (155445380181³) is 3756068103922865870845647488469741
• The square root of 155445380181 is 394265.6213531683
• The cube root of 155445380181 is 5376.8254718249

Scales and comparisons

• 155,445,380,181 seconds is equal to 4,942 years, 35 weeks, 3 days, 8 hours, 16 minutes, 21 seconds.
• To count from 1 to 155,445,380,181 would take you about nine thousand, eight hundred eighty-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 155445380181 cubic inches would be around 448.1 feet tall.

Recreational maths with 155445380181

• 155445380181 backwards is 181083544551
• The number of decimal digits it has is: 12
• The sum of 155445380181's digits is 45
• More coming soon!