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68608712248 = 2379946711467
BaseRepresentation
bin111111111001011001…
…011101111000111000
320120002110101200212121
4333321121131320320
52111002312242443
651303550451024
74646121301066
oct777131357070
9216073350777
1068608712248
1127107913a8a
1211368b03a74
13661512956b
14346bd31036
151bb83dc4ed
hexff965de38

68608712248 has 32 divisors (see below), whose sum is σ = 130294828800. Its totient is φ = 33863592672.

The previous prime is 68608712231. The next prime is 68608712269. The reversal of 68608712248 is 84221780686.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 68608712195 and 68608712204.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5977411 + ... + 5988877.

It is an arithmetic number, because the mean of its divisors is an integer number (4071713400).

Almost surely, 268608712248 is an apocalyptic number.

It is an amenable number.

68608712248 is a deficient number, since it is larger than the sum of its proper divisors (61686116552).

68608712248 is a wasteful number, since it uses less digits than its factorization.

68608712248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21019 (or 21015 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 52.

The spelling of 68608712248 in words is "sixty-eight billion, six hundred eight million, seven hundred twelve thousand, two hundred forty-eight".

Divisors: 1 2 4 8 79 158 316 632 9467 11467 18934 22934 37868 45868 75736 91736 747893 905893 1495786 1811786 2991572 3623572 5983144 7247144 108558089 217116178 434232356 868464712 8576089031 17152178062 34304356124 68608712248