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67808971008 = 283247626191
BaseRepresentation
bin111111001001101110…
…101100100100000000
320111000201112122010200
4333021232230210000
52102333044033013
651052341325200
74620240513012
oct771156544400
9214021478120
1067808971008
112683743a609
1211185106800
1365185373ac
1433d3a321b2
151b6d0b6e73
hexfc9bac900

67808971008 has 108 divisors (see below), whose sum is σ = 199670085888. Its totient is φ = 22122040320.

The previous prime is 67808970997. The next prime is 67808971033. The reversal of 67808971008 is 80017980876.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 204808 + ... + 421383.

Almost surely, 267808971008 is an apocalyptic number.

It is an amenable number.

67808971008 is an abundant number, since it is smaller than the sum of its proper divisors (131861114880).

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

67808971008 is a wasteful number, since it uses less digits than its factorization.

67808971008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626260 (or 626243 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 54.

The spelling of 67808971008 in words is "sixty-seven billion, eight hundred eight million, nine hundred seventy-one thousand, eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 47 48 64 72 94 96 128 141 144 188 192 256 282 288 376 384 423 564 576 752 768 846 1128 1152 1504 1692 2256 2304 3008 3384 4512 6016 6768 9024 12032 13536 18048 27072 36096 54144 108288 626191 1252382 1878573 2504764 3757146 5009528 5635719 7514292 10019056 11271438 15028584 20038112 22542876 29430977 30057168 40076224 45085752 58861954 60114336 80152448 88292931 90171504 117723908 120228672 160304896 176585862 180343008 235447816 240457344 264878793 353171724 360686016 470895632 480914688 529757586 706343448 721372032 941791264 1059515172 1412686896 1442744064 1883582528 2119030344 2825373792 3767165056 4238060688 5650747584 7534330112 8476121376 11301495168 16952242752 22602990336 33904485504 67808971008