138655396971

Names of 138655396971

• Cardinal: 138655396971 can be written as One hundred thirty-eight billion, six hundred fifty-five million, three hundred ninety-six thousand, nine hundred seventy-one.

Scientific notation

• Scientific notation: 1.38655396971 × 10¹¹

Factors of 138655396971

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 9
• Sum of prime factors: 8443

Divisors of 138655396971

• Number of divisors d(n): 144
• Complete list of divisors:
  1 3 7 9 13 21 27 31 39 49 63 91 93 117 147 189 217 273 279 351 403 441 637 651 819 837 961 1209 1323 1519 1911 1953 2457 2821 2883 3627 4557 5733 5859 6727 8389 8463 8649 10881 12493 13671 17199 19747 20181 25167 25389 25947 37479 41013 47089 58723 59241 60543 75501 76167 87451 109057 112437 141267 176169 177723 181629 226503 260059 262353 327171 337311 411061 423801 528507 533169 612157 763399 780177 787059 981513 1233183 1271403 1585521 1820413 1836471 2290197 2340531 2361177 2944539 3380767 3699549 5343793 5461239 5509413 6870591 7021593 8061829 10142301 11098647 12742891 16031379 16383717 16528239 20611773 23665369 24185487 30426903 38228673 48094137 49151151 56432803 70996107 72556461 91280709 104803777 114686019 144282411 165657583 169298409 212988321 217669383 314411331 344058057 395029621 496972749 507895227 638964963 733626439 943233993 1185088863 1490918247 1523685681 2200879317 2829701979 3555266589 4472754741 5135385073 6602637951 10665799767 15406155219 19807913853 46218465657 138655396971
• Sum of all divisors σ(n): 265934138400
• Sum of proper divisors (its aliquot sum) s(n): 127278741429
• 138655396971 is a deficient number, because the sum of its proper divisors (127278741429) is less than itself. Its deficiency is 11376655542

Bases of 138655396971

• Binary: 10000001001000100000010111010001101011₂
• Hexadecimal: 0x204881746B
• Base-36: 1RP3UD0R

Squares and roots of 138655396971

• 138655396971 squared (138655396971²) is 19225319109185595974841
• 138655396971 cubed (138655396971³) is 2665694252978280902406798583606611
• The square root of 138655396971 is 372364.6021992423
• The cube root of 138655396971 is 5175.8171607721

Scales and comparisons

• 138,655,396,971 seconds is equal to 4,408 years, 42 weeks, 1 day, 20 hours, 2 minutes, 51 seconds.
• To count from 1 to 138,655,396,971 would take you about eight thousand, eight hundred seventeen 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 138655396971 cubic inches would be around 431.3 feet tall.

Recreational maths with 138655396971

• 138655396971 backwards is 179693556831
• 138655396971 is a Harshad number.
• The number of decimal digits it has is: 12
• The sum of 138655396971's digits is 63
• More coming soon!