161555816749440

Names of 161555816749440

• Cardinal: 161555816749440 can be written as One hundred sixty-one trillion, five hundred fifty-five billion, eight hundred sixteen million, seven hundred forty-nine thousand, four hundred forty.

Scientific notation

• Scientific notation: 1.6155581674944 × 10¹⁴

Factors of 161555816749440

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 11
• Sum of prime factors: 815148

Divisors of 161555816749440

• Number of divisors d(n): 128
• Complete list of divisors:
  1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 128 160 192 240 320 384 480 640 960 1920 121267 242534 363801 485068 606335 693871 727602 970136 1212670 1387742 1455204 1819005 1940272 2081613 2425340 2775484 2910408 3469355 3638010 3880544 4163226 4850680 5550968 5820816 6938710 7276020 7761088 8326452 9701360 10408065 11101936 11641632 13877420 14552040 15522176 16652904 19402720 20816130 22203872 23283264 27754840 29104080 33305808 38805440 41632260 44407744 46566528 55509680 58208160 66611616 77610880 83264520 88815488 111019360 116416320 133223232 166529040 222038720 232832640 266446464 333058080 444077440 666116160 1332232320 84143654557 168287309114 252430963671 336574618228 420718272785 504861927342 673149236456 841436545570 1009723854684 1262154818355 1346298472912 1682873091140 2019447709368 2524309636710 2692596945824 3365746182280 4038895418736 5048619273420 5385193891648 6731492364560 8077790837472 10097238546840 10770387783296 13462984729120 16155581674944 20194477093680 26925969458240 32311163349888 40388954187360 53851938916480 80777908374720 161555816749440
• Sum of all divisors σ(n): 514964154539520
• Sum of proper divisors (its aliquot sum) s(n): 353408337790080
• 161555816749440 is an abundant number, because the sum of its proper divisors (353408337790080) is greater than itself. Its abundance is 191852521040640

Bases of 161555816749440

• Binary: 100100101110111100100101000100011001100110000000₂
• Hexadecimal: 0x92EF25119980
• Base-36: 1L9LPU1MDC

Squares and roots of 161555816749440

• 161555816749440 squared (161555816749440²) is 26100281925578638047740313600
• 161555816749440 cubed (161555816749440³) is 4216652363877503428276987818242398224384000
• The square root of 161555816749440 is 12710460.9180564337
• The cube root of 161555816749440 is 54463.7490600361

Scales and comparisons

• 161,555,816,749,440 seconds is equal to 5,136,975 years, 12 weeks, 6 days, 3 hours, 44 minutes.
• To count from 1 to 161,555,816,749,440 would take you about twelve million, eight hundred forty-two thousand, four hundred thirty-eight 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 161555816749440 cubic inches would be around 4538.6 feet tall.

Recreational maths with 161555816749440

• 161555816749440 backwards is 044947618555161
• The number of decimal digits it has is: 15
• The sum of 161555816749440's digits is 66
• More coming soon!