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68911353210 = 23571075330517
BaseRepresentation
bin100000000101101101…
…1111100110101111010
320120212112212110020010
41000023123330311322
52112112301300320
651354001242350
74656454560210
oct1001333746572
9216775773203
1068911353210
1127252731687
12114323333b6
136662a4045b
14349a1d0cb0
151bd4c6dae0
hex100b6fcd7a

68911353210 has 64 divisors (see below), whose sum is σ = 189037769472. Its totient is φ = 15749185536.

The previous prime is 68911353197. The next prime is 68911353227. The reversal of 68911353210 is 1235311986.

It is a Curzon 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, 2242872 + ... + 2273388.

It is an arithmetic number, because the mean of its divisors is an integer number (2953715148).

Almost surely, 268911353210 is an apocalyptic number.

68911353210 is an abundant number, since it is smaller than the sum of its proper divisors (120126416262).

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

68911353210 is a wasteful number, since it uses less digits than its factorization.

68911353210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41287.

The product of its (nonzero) digits is 38880, while the sum is 39.

The spelling of 68911353210 in words is "sixty-eight billion, nine hundred eleven million, three hundred fifty-three thousand, two hundred ten".

Divisors: 1 2 3 5 6 7 10 14 15 21 30 35 42 70 105 210 10753 21506 30517 32259 53765 61034 64518 75271 91551 107530 150542 152585 161295 183102 213619 225813 305170 322590 376355 427238 451626 457755 640857 752710 915510 1068095 1129065 1281714 2136190 2258130 3204285 6408570 328149301 656298602 984447903 1640746505 1968895806 2297045107 3281493010 4594090214 4922239515 6891135321 9844479030 11485225535 13782270642 22970451070 34455676605 68911353210