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68102053488 = 24327292329709
BaseRepresentation
bin111111011011001100…
…101101111001110000
320111210011000202201100
4333123030231321300
52103433111202423
651141411204400
74630426621620
oct773314557160
9214704022640
1068102053488
1126977919837
12112472a6700
136564182691
143420924880
151b88bab343
hexfdb32de70

68102053488 has 120 divisors (see below), whose sum is σ = 225329551200. Its totient is φ = 18786765312.

The previous prime is 68102053471. The next prime is 68102053493. The reversal of 68102053488 is 88435020186.

68102053488 is a `hidden beast` number, since 6 + 8 + 10 + 20 + 534 + 88 = 666.

It is a super-3 number, since 3×681020534883 (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1135623 + ... + 1194086.

It is an arithmetic number, because the mean of its divisors is an integer number (1877746260).

Almost surely, 268102053488 is an apocalyptic number.

It is an amenable number.

68102053488 is an abundant number, since it is smaller than the sum of its proper divisors (157227497712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68102053488 is a wasteful number, since it uses less digits than its factorization.

68102053488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329759 (or 2329750 counting only the distinct ones).

The product of its (nonzero) digits is 368640, while the sum is 45.

The spelling of 68102053488 in words is "sixty-eight billion, one hundred two million, fifty-three thousand, four hundred eighty-eight".

Divisors: 1 2 3 4 6 7 8 9 12 14 16 18 21 24 28 29 36 42 48 56 58 63 72 84 87 112 116 126 144 168 174 203 232 252 261 336 348 406 464 504 522 609 696 812 1008 1044 1218 1392 1624 1827 2088 2436 3248 3654 4176 4872 7308 9744 14616 29232 2329709 4659418 6989127 9318836 13978254 16307963 18637672 20967381 27956508 32615926 37275344 41934762 48923889 55913016 65231852 67561561 83869524 97847778 111826032 130463704 135123122 146771667 167739048 195695556 202684683 260927408 270246244 293543334 335478096 391391112 405369366 472930927 540492488 587086668 608054049 782782224 810738732 945861854 1080984976 1174173336 1216108098 1418792781 1621477464 1891723708 2348346672 2432216196 2837585562 3242954928 3783447416 4256378343 4864432392 5675171124 7566894832 8512756686 9728864784 11350342248 17025513372 22700684496 34051026744 68102053488