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68288426318 = 27173134911867
BaseRepresentation
bin111111100110010011…
…101011000101001110
320112021010201111011202
4333212103223011032
52104323314120233
651212105545502
74635152021630
oct774623530516
9215233644152
1068288426318
1126a63044472
12112997a5292
136593978168
14343b59aa50
151b9a222be8
hexfe64eb14e

68288426318 has 64 divisors (see below), whose sum is σ = 124668108288. Its totient is φ = 27386311680.

The previous prime is 68288426303. The next prime is 68288426383. The reversal of 68288426318 is 81362488286.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36575621 + ... + 36577487.

It is an arithmetic number, because the mean of its divisors is an integer number (1947939192).

Almost surely, 268288426318 is an apocalyptic number.

68288426318 is a deficient number, since it is larger than the sum of its proper divisors (56379681970).

68288426318 is a wasteful number, since it uses less digits than its factorization.

68288426318 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2697.

The product of its digits is 7077888, while the sum is 56.

The spelling of 68288426318 in words is "sixty-eight billion, two hundred eighty-eight million, four hundred twenty-six thousand, three hundred eighteen".

Divisors: 1 2 7 14 17 34 119 238 313 491 626 982 1867 2191 3437 3734 4382 5321 6874 8347 10642 13069 16694 26138 31739 37247 58429 63478 74494 116858 153683 222173 307366 444346 584371 916697 1075781 1168742 1833394 2151562 2612611 4090597 5225222 6416879 8181194 9934307 12833758 15583849 18288277 19868614 31167698 36576554 69540149 109086943 139080298 218173886 286926161 573852322 2008483127 4016966254 4877744737 9755489474 34144213159 68288426318