155909477997

Names of 155909477997

• Cardinal: 155909477997 can be written as One hundred fifty-five billion, nine hundred nine million, four hundred seventy-seven thousand, nine hundred ninety-seven.

Scientific notation

• Scientific notation: 1.55909477997 × 10¹¹

Factors of 155909477997

• Number of distinct prime factors ω(n): 6
• Total number of prime factors Ω(n): 8
• Sum of prime factors: 1546

Divisors of 155909477997

• Number of divisors d(n): 128
• Complete list of divisors:
  1 3 7 9 13 21 27 39 63 91 117 131 189 273 351 393 691 701 819 917 1179 1703 2073 2103 2457 2751 3537 4837 4907 5109 6219 6309 8253 8983 9113 11921 14511 14721 15327 18657 18927 24759 26949 27339 35763 43533 44163 45981 62881 63791 80847 82017 90521 91831 107289 130599 132489 188643 191373 242541 246051 271563 275493 321867 484391 565929 574119 633647 642817 814689 826479 1176773 1193803 1453173 1697787 1722357 1900941 1928451 2444067 2479437 3390737 3530319 3581409 4359519 5702823 5785353 6297083 8237411 8356621 10172211 10590957 10744227 13078557 17108469 17356059 18891249 24712233 25069863 30516633 31772871 32232681 44079581 56673747 63455221 74136699 75209589 91549899 132238743 170021241 190365663 222410097 225628767 396716229 444186547 571096989 824917873 1190148687 1332559641 1713290967 2474753619 3997678923 5774425111 7424260857 11993036769 17323275333 22272782571 51969825999 155909477997
• Sum of all divisors σ(n): 287273226240
• Sum of proper divisors (its aliquot sum) s(n): 131363748243
• 155909477997 is a deficient number, because the sum of its proper divisors (131363748243) is less than itself. Its deficiency is 24545729754

Bases of 155909477997

• Binary: 10010001001100111011011101011001101101₂
• Hexadecimal: 0x244CEDD66D
• Base-36: 1ZMGH759

Squares and roots of 155909477997

• 155909477997 squared (155909477997²) is 24307765329297027132009
• 155909477997 cubed (155909477997³) is 3789811003764274311115469199905973
• The square root of 155909477997 is 394853.7425389305
• The cube root of 155909477997 is 5382.1711730413

Scales and comparisons

• 155,909,477,997 seconds is equal to 4,957 years, 22 weeks, 5 days, 20 hours, 19 minutes, 57 seconds.
• To count from 1 to 155,909,477,997 would take you about nine thousand, nine hundred fourteen 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 155909477997 cubic inches would be around 448.5 feet tall.

Recreational maths with 155909477997

• 155909477997 backwards is 799774909551
• The number of decimal digits it has is: 12
• The sum of 155909477997's digits is 72
• More coming soon!