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68716020384 = 2533117230221
BaseRepresentation
bin111111111111110010…
…110100001010100000
320120100221022111222000
4333333302310022200
52111212300123014
651322342444000
74651563351564
oct777762641240
9216327274860
1068716020384
11271624471a0
1211398a33600
13663142b5bb
14347c2a56a4
151bc2a37509
hexfffcb42a0

68716020384 has 96 divisors (see below), whose sum is σ = 218641913280. Its totient is φ = 20823033600.

The previous prime is 68716020379. The next prime is 68716020391. The reversal of 68716020384 is 48302061786.

68716020384 is a `hidden beast` number, since 6 + 8 + 7 + 1 + 602 + 0 + 38 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3605607 + ... + 3624614.

It is an arithmetic number, because the mean of its divisors is an integer number (2277519930).

Almost surely, 268716020384 is an apocalyptic number.

It is an amenable number.

68716020384 is an abundant number, since it is smaller than the sum of its proper divisors (149925892896).

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

68716020384 is a wasteful number, since it uses less digits than its factorization.

68716020384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7230251 (or 7230237 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 68716020384 in words is "sixty-eight billion, seven hundred sixteen million, twenty thousand, three hundred eighty-four".

Divisors: 1 2 3 4 6 8 9 11 12 16 18 22 24 27 32 33 36 44 48 54 66 72 88 96 99 108 132 144 176 198 216 264 288 297 352 396 432 528 594 792 864 1056 1188 1584 2376 3168 4752 9504 7230221 14460442 21690663 28920884 43381326 57841768 65071989 79532431 86762652 115683536 130143978 159064862 173525304 195215967 231367072 238597293 260287956 318129724 347050608 390431934 477194586 520575912 636259448 694101216 715791879 780863868 954389172 1041151824 1272518896 1431583758 1561727736 1908778344 2082303648 2147375637 2545037792 2863167516 3123455472 3817556688 4294751274 5726335032 6246910944 7635113376 8589502548 11452670064 17179005096 22905340128 34358010192 68716020384