64401645888

Names of 64401645888

• Cardinal: 64401645888 can be written as Sixty-four billion, four hundred one million, six hundred forty-five thousand, eight hundred eighty-eight.

Scientific notation

• Scientific notation: 6.4401645888 × 10¹⁰

Factors of 64401645888

• Number of distinct prime factors ω(n): 5
• Total number of prime factors Ω(n): 13
• Sum of prime factors: 10904

Divisors of 64401645888

• Number of divisors d(n): 280
• Complete list of divisors:
  1 2 3 4 6 8 9 12 16 18 24 27 31 32 36 37 48 54 62 64 72 74 81 93 96 108 111 124 144 148 162 186 192 216 222 248 279 288 296 324 333 372 432 444 496 558 576 592 648 666 744 837 864 888 992 999 1116 1147 1184 1296 1332 1488 1674 1728 1776 1984 1998 2232 2294 2368 2511 2592 2664 2976 2997 3348 3441 3552 3996 4464 4588 5022 5184 5328 5952 5994 6696 6882 7104 7992 8928 9176 10044 10323 10656 10831 11988 13392 13764 15984 17856 18352 20088 20646 21312 21662 23976 26784 27528 30969 31968 32493 36704 40176 41292 43324 47952 53568 55056 61938 63936 64986 73408 80352 82584 86648 92907 95904 97479 110112 123876 129972 160704 165168 173296 185814 191808 194958 220224 247752 259944 292437 330336 335761 346592 371628 389916 400747 495504 519888 584874 660672 671522 693184 743256 779832 801494 877311 991008 1007283 1039776 1169748 1202241 1343044 1486512 1559664 1602988 1754622 1982016 2014566 2079552 2339496 2404482 2686088 2973024 3021849 3119328 3205976 3509244 3606723 4029132 4678992 4808964 5372176 5946048 6043698 6238656 6411952 7018488 7213446 8058264 9065547 9357984 9617928 10744352 10820169 12087396 12423157 12823904 14036976 14426892 16116528 18131094 18715968 19235856 21488704 21640338 24174792 24846314 25647808 27196641 28073952 28853784 32233056 32460507 36262188 37269471 38471712 43280676 48349584 49692628 54393282 56147904 57707568 64466112 64921014 72524376 74538942 76943424 86561352 96699168 99385256 108786564 111808413 115415136 129842028 145048752 149077884 173122704 193398336 198770512 217573128 223616826 230830272 259684056 290097504 298155768 335425239 346245408 397541024 435146256 447233652 519368112 580195008 596311536 670850478 692490816 795082048 870292512 894467304 1006275717 1038736224 1192623072 1341700956 1740585024 1788934608 2012551434 2077472448 2385246144 2683401912 3577869216 4025102868 5366803824 7155738432 8050205736 10733607648 16100411472 21467215296 32200822944 64401645888
• Sum of all divisors σ(n): 202409698304
• Sum of proper divisors (its aliquot sum) s(n): 138008052416
• 64401645888 is an abundant number, because the sum of its proper divisors (138008052416) is greater than itself. Its abundance is 73606406528

Bases of 64401645888

• Binary: 111011111110101000110010000101000000₂
• Hexadecimal: 0xEFEA32140
• Base-36: TL32S00

Squares and roots of 64401645888

• 64401645888 squared (64401645888²) is 4147571993083347308544
• 64401645888 cubed (64401645888³) is 267110462793540118634568564867072
• The square root of 64401645888 is 253774.7936419219
• The cube root of 64401645888 is 4008.3501791641

Scales and comparisons

• 64,401,645,888 seconds is equal to 2,047 years, 40 weeks, 1 day, 10 hours, 4 minutes, 48 seconds.
• To count from 1 to 64,401,645,888 would take you about four thousand and ninety-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 64401645888 cubic inches would be around 334 feet tall.

Recreational maths with 64401645888

• 64401645888 backwards is 88854610446
• 64401645888 is a Harshad number.
• The number of decimal digits it has is: 11
• The sum of 64401645888's digits is 54
• More coming soon!