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68648562206 = 27171312201827
BaseRepresentation
bin111111111011110001…
…011110111000011110
320120012020101021201222
4333323301132320132
52111043012442311
651311532533342
74650114102530
oct777361367036
9216166337658
1068648562206
1127128361934
121137a321252
13662046ca13
143473345850
151bbbb5eadb
hexffbc5ee1e

68648562206 has 32 divisors (see below), whose sum is σ = 125557039872. Its totient is φ = 27478788480.

The previous prime is 68648562193. The next prime is 68648562221. The reversal of 68648562206 is 60226584686.

It is a Curzon number.

It is a congruent number.

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, 1069736 + ... + 1132091.

It is an arithmetic number, because the mean of its divisors is an integer number (3923657496).

Almost surely, 268648562206 is an apocalyptic number.

68648562206 is a deficient number, since it is larger than the sum of its proper divisors (56908477666).

68648562206 is a wasteful number, since it uses less digits than its factorization.

68648562206 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2201984.

The product of its (nonzero) digits is 6635520, while the sum is 53.

The spelling of 68648562206 in words is "sixty-eight billion, six hundred forty-eight million, five hundred sixty-two thousand, two hundred six".

Divisors: 1 2 7 14 17 34 119 131 238 262 917 1834 2227 4454 15589 31178 2201827 4403654 15412789 30825578 37431059 74862118 262017413 288439337 524034826 576878674 2019075359 4038150718 4903468729 9806937458 34324281103 68648562206