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68888783124 = 22347268311321
BaseRepresentation
bin100000000101000010…
…1110110100100010100
320120210222101202220000
41000022011312210110
52112041012024444
651351433411300
74656061665210
oct1001205664424
9216728352800
1068888783124
1127240a16417
1211426869b30
13665b16a285
1434971d7940
151bd2cb1469
hex100a176914

68888783124 has 120 divisors (see below), whose sum is σ = 205910768448. Its totient is φ = 19673435520.

The previous prime is 68888783099. The next prime is 68888783147. The reversal of 68888783124 is 42138788886.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6079384 + ... + 6090704.

Almost surely, 268888783124 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68888783124, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102955384224).

68888783124 is an abundant number, since it is smaller than the sum of its proper divisors (137021985324).

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

68888783124 is a wasteful number, since it uses less digits than its factorization.

68888783124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14027 (or 14016 counting only the distinct ones).

The product of its digits is 33030144, while the sum is 63.

The spelling of 68888783124 in words is "sixty-eight billion, eight hundred eighty-eight million, seven hundred eighty-three thousand, one hundred twenty-four".

Divisors: 1 2 3 4 6 7 9 12 14 18 21 27 28 36 42 54 63 81 84 108 126 162 189 252 324 378 567 756 1134 2268 2683 5366 8049 10732 11321 16098 18781 22642 24147 32196 33963 37562 45284 48294 56343 67926 72441 75124 79247 96588 101889 112686 135852 144882 158494 169029 203778 217323 225372 237741 289764 305667 316988 338058 407556 434646 475482 507087 611334 676116 713223 869292 917001 950964 1014174 1222668 1426446 1521261 1834002 2028348 2139669 2852892 3042522 3668004 4279338 6085044 6419007 8558676 12838014 25676028 30374243 60748486 91122729 121496972 182245458 212619701 273368187 364490916 425239402 546736374 637859103 820104561 850478804 1093472748 1275718206 1640209122 1913577309 2460313683 2551436412 3280418244 3827154618 4920627366 5740731927 7654309236 9841254732 11481463854 17222195781 22962927708 34444391562 68888783124