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68751544608 = 2533419189913
BaseRepresentation
bin100000000000111101…
…0010101000100100000
320120110102011100001000
41000001322111010200
52111300343411413
651330052112000
74652504326005
oct1000172250440
9216412140030
1068751544608
112718050005a
12113a8905600
1366388b8b56
143482cb18ac
151bc5c03073
hex1001e95120

68751544608 has 96 divisors (see below), whose sum is σ = 201004977600. Its totient is φ = 22862366208.

The previous prime is 68751544583. The next prime is 68751544627. The reversal of 68751544608 is 80644515786.

68751544608 is a `hidden beast` number, since 6 + 87 + 51 + 54 + 460 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 267060 + ... + 456972.

It is an arithmetic number, because the mean of its divisors is an integer number (2093801850).

Almost surely, 268751544608 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68751544608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100502488800).

68751544608 is an abundant number, since it is smaller than the sum of its proper divisors (132253432992).

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

68751544608 is a wasteful number, since it uses less digits than its factorization.

68751544608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190351 (or 190337 counting only the distinct ones).

The product of its (nonzero) digits is 6451200, while the sum is 54.

The spelling of 68751544608 in words is "sixty-eight billion, seven hundred fifty-one million, five hundred forty-four thousand, six hundred eight".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 27 32 36 48 54 72 96 108 144 216 288 419 432 838 864 1257 1676 2514 3352 3771 5028 6704 7542 10056 11313 13408 15084 20112 22626 30168 40224 45252 60336 90504 120672 181008 189913 362016 379826 569739 759652 1139478 1519304 1709217 2278956 3038608 3418434 4557912 5127651 6077216 6836868 9115824 10255302 13673736 18231648 20510604 27347472 41021208 54694944 79573547 82042416 159147094 164084832 238720641 318294188 477441282 636588376 716161923 954882564 1273176752 1432323846 1909765128 2148485769 2546353504 2864647692 3819530256 4296971538 5729295384 7639060512 8593943076 11458590768 17187886152 22917181536 34375772304 68751544608