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68618083058 = 2724725632
BaseRepresentation
bin111111111001111101…
…001101101011110010
320120010010000210012122
4333321331031223302
52111012212124213
651304523354242
74646264040200
oct777175155362
9216103023178
1068618083058
1127112134458
1211370082982
13661705a915
14346d290070
151bb913dd08
hexff9f4daf2

68618083058 has 54 divisors (see below), whose sum is σ = 122550908751. Its totient is φ = 28730930424.

The previous prime is 68618082977. The next prime is 68618083073. The reversal of 68618083058 is 85038081686.

It can be written as a sum of positive squares in only one way, i.e., 34309041529 + 34309041529 = 185227^2 + 185227^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=185227.

It is a super-3 number, since 3×686180830583 (a number of 33 digits) contains 333 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 121879085 + ... + 121879647.

Almost surely, 268618083058 is an apocalyptic number.

68618083058 is a deficient number, since it is larger than the sum of its proper divisors (53932825693).

68618083058 is an frugal number, since it uses more digits than its factorization.

68618083058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236 (or 619 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 53.

The spelling of 68618083058 in words is "sixty-eight billion, six hundred eighteen million, eighty-three thousand, fifty-eight".

Divisors: 1 2 7 14 47 49 94 98 329 563 658 1126 2209 2303 3941 4418 4606 7882 15463 26461 27587 30926 52922 55174 108241 185227 216482 316969 370454 633938 1243667 1296589 2218783 2487334 2593178 4437566 8705669 14897543 15531481 17411338 29795086 31062962 60939683 104282801 121879366 208565602 700184521 729979607 1400369042 1459959214 4901291647 9802583294 34309041529 68618083058