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68686814000 = 245376477583
BaseRepresentation
bin111111111110000011…
…011001101100110000
320120021220100200100002
4333332003121230300
52111132311022000
651315420445132
74651060200020
oct777603315460
9216256320302
1068686814000
1127147a08a92
121138b0a97a8
13662837390c
143478461a80
151bc01b88d5
hexffe0d9b30

68686814000 has 160 divisors (see below), whose sum is σ = 190129545216. Its totient is φ = 23510265600.

The previous prime is 68686813963. The next prime is 68686814003. The reversal of 68686814000 is 41868686.

It is not an unprimeable number, because it can be changed into a prime (68686814003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9054209 + ... + 9061791.

Almost surely, 268686814000 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 68686814000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95064772608).

68686814000 is an abundant number, since it is smaller than the sum of its proper divisors (121442731216).

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

68686814000 is a wasteful number, since it uses less digits than its factorization.

68686814000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8260 (or 8244 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 47.

The spelling of 68686814000 in words is "sixty-eight billion, six hundred eighty-six million, eight hundred fourteen thousand".

Divisors: 1 2 4 5 7 8 10 14 16 20 25 28 35 40 50 56 70 80 100 112 125 140 175 200 250 280 350 400 500 560 647 700 875 1000 1294 1400 1750 2000 2588 2800 3235 3500 4529 5176 6470 7000 7583 9058 10352 12940 14000 15166 16175 18116 22645 25880 30332 32350 36232 37915 45290 51760 53081 60664 64700 72464 75830 80875 90580 106162 113225 121328 129400 151660 161750 181160 189575 212324 226450 258800 265405 303320 323500 362320 379150 424648 452900 530810 566125 606640 647000 758300 849296 905800 947875 1061620 1132250 1294000 1327025 1516600 1811600 1895750 2123240 2264500 2654050 3033200 3791500 4246480 4529000 4906201 5308100 6635125 7583000 9058000 9812402 10616200 13270250 15166000 19624804 21232400 24531005 26540500 34343407 39249608 49062010 53081000 68686814 78499216 98124020 106162000 122655025 137373628 171717035 196248040 245310050 274747256 343434070 392496080 490620100 549494512 613275125 686868140 858585175 981240200 1226550250 1373736280 1717170350 1962480400 2453100500 2747472560 3434340700 4292925875 4906201000 6868681400 8585851750 9812402000 13737362800 17171703500 34343407000 68686814000