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68085000208 = 2426891158243
BaseRepresentation
bin111111011010001011…
…101010100000010000
320111201221221101000101
4333122023222200100
52103414230001313
651140001502144
74630131644611
oct773213524020
9214657841011
1068085000208
1126969231415
1211241641954
136560791594
14341c565c08
151b8743d5dd
hexfda2ea810

68085000208 has 20 divisors (see below), whose sum is σ = 131920427088. Its totient is φ = 34041019040.

The previous prime is 68085000169. The next prime is 68085000227. The reversal of 68085000208 is 80200058086.

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 3 ways as a sum of consecutive naturals, for example, 351135 + ... + 509377.

Almost surely, 268085000208 is an apocalyptic number.

68085000208 is the 139474-th centered heptagonal number.

It is an amenable number.

68085000208 is a deficient number, since it is larger than the sum of its proper divisors (63835426880).

68085000208 is a wasteful number, since it uses less digits than its factorization.

68085000208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185142 (or 185136 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

The spelling of 68085000208 in words is "sixty-eight billion, eighty-five million, two hundred eight", and thus it is an aban number.

Divisors: 1 2 4 8 16 26891 53782 107564 158243 215128 316486 430256 632972 1265944 2531888 4255312513 8510625026 17021250052 34042500104 68085000208