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68378685419682 = 2321132854106579
BaseRepresentation
bin11111000110000101001110…
…10000010011000010100010
322222002221100011012102101200
433203002213100103002202
532430304021431412212
6401232422345142030
720255124366054261
oct1743024720230242
9288087304172350
1068378685419682
111a873268322000
1278042b748a916
132c2010bc64781
1412c57904585d8
157d8a470756dc
hex3e30a74130a2

68378685419682 has 48 divisors (see below), whose sum is σ = 162958069291680. Its totient is φ = 20720813756280.

The previous prime is 68378685419651. The next prime is 68378685419719. The reversal of 68378685419682 is 28691458687386.

68378685419682 is a `hidden beast` number, since 6 + 8 + 3 + 7 + 8 + 6 + 8 + 541 + 9 + 68 + 2 = 666.

It is a super-2 number, since 2×683786854196822 (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1427029332 + ... + 1427077247.

It is an arithmetic number, because the mean of its divisors is an integer number (3394959776910).

Almost surely, 268378685419682 is an apocalyptic number.

68378685419682 is an abundant number, since it is smaller than the sum of its proper divisors (94579383871998).

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

68378685419682 is a wasteful number, since it uses less digits than its factorization.

68378685419682 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2854106620 (or 2854106595 counting only the distinct ones).

The product of its digits is 6688604160, while the sum is 81.

The spelling of 68378685419682 in words is "sixty-eight trillion, three hundred seventy-eight billion, six hundred eighty-five million, four hundred nineteen thousand, six hundred eighty-two".

Divisors: 1 2 3 6 9 11 18 22 33 66 99 121 198 242 363 726 1089 1331 2178 2662 3993 7986 11979 23958 2854106579 5708213158 8562319737 17124639474 25686959211 31395172369 51373918422 62790344738 94185517107 188371034214 282556551321 345346896059 565113102642 690693792118 1036040688177 2072081376354 3108122064531 3798815856649 6216244129062 7597631713298 11396447569947 22792895139894 34189342709841 68378685419682