155121353440

Names of 155121353440

• Cardinal: 155121353440 can be written as One hundred fifty-five billion, one hundred twenty-one million, three hundred fifty-three thousand, four hundred forty.

Scientific notation

• Scientific notation: 1.5512135344 × 10¹¹

Factors of 155121353440

• Number of distinct prime factors ω(n): 4
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 165

Divisors of 155121353440

• Number of divisors d(n): 144
• Complete list of divisors:
  1 2 4 5 8 10 16 19 20 32 38 40 76 80 95 139 152 160 190 278 304 361 380 556 608 695 722 760 1112 1390 1444 1520 1805 2224 2641 2780 2888 3040 3610 4448 5282 5560 5776 7220 10564 11120 11552 13205 14440 19321 21128 22240 26410 28880 38642 42256 50179 52820 57760 77284 84512 96605 100358 105640 154568 193210 200716 211280 250895 309136 367099 386420 401432 422560 501790 618272 734198 772840 802864 1003580 1468396 1545680 1605728 1835495 2007160 2685619 2936792 3091360 3670990 4014320 5371238 5873584 6974881 7341980 8028640 10742476 11747168 13428095 13949762 14683960 21484952 26856190 27899524 29367920 34874405 42969904 51026761 53712380 55799048 58735840 69748810 85939808 102053522 107424760 111598096 139497620 204107044 214849520 223196192 255133805 278995240 408214088 429699040 510267610 557990480 816428176 969508459 1020535220 1115980960 1632856352 1939016918 2041070440 3878033836 4082140880 4847542295 7756067672 8164281760 9695084590 15512135344 19390169180 31024270688 38780338360 77560676720 155121353440
• Sum of all divisors σ(n): 389580211440
• Sum of proper divisors (its aliquot sum) s(n): 234458858000
• 155121353440 is an abundant number, because the sum of its proper divisors (234458858000) is greater than itself. Its abundance is 79337504560

Bases of 155121353440

• Binary: 10010000011101111101000000001011100000₂
• Hexadecimal: 0x241DF402E0
• Base-36: 1Z9F8YCG

Squares and roots of 155121353440

• 155121353440 squared (155121353440²) is 24062634293057399833600
• 155121353440 cubed (155121353440³) is 3732628398870821457795262787584000
• The square root of 155121353440 is 393854.4825693875
• The cube root of 155121353440 is 5373.0868655855

Scales and comparisons

• 155,121,353,440 seconds is equal to 4,932 years, 19 weeks, 5 days, 50 minutes, 40 seconds.
• To count from 1 to 155,121,353,440 would take you about nine thousand, eight hundred sixty-four 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 155121353440 cubic inches would be around 447.8 feet tall.

Recreational maths with 155121353440

• 155121353440 backwards is 044353121551
• The number of decimal digits it has is: 12
• The sum of 155121353440's digits is 34
• More coming soon!