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68752281248 = 257337910771
BaseRepresentation
bin100000000000111110…
…1001000111010100000
320120110110112202111222
41000001331020322200
52111301040444443
651330115554212
74652513514440
oct1000175107240
9216413482458
1068752281248
1127180963552
12113a8bbb968
136638ab6231
143483024120
151bc5ceb468
hex1001f48ea0

68752281248 has 48 divisors (see below), whose sum is σ = 155151831744. Its totient is φ = 29377797120.

The previous prime is 68752281211. The next prime is 68752281259. The reversal of 68752281248 is 84218225786.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 68752281248.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 379898 + ... + 530873.

It is an arithmetic number, because the mean of its divisors is an integer number (3232329828).

Almost surely, 268752281248 is an apocalyptic number.

It is an amenable number.

68752281248 is an abundant number, since it is smaller than the sum of its proper divisors (86399550496).

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

68752281248 is a wasteful number, since it uses less digits than its factorization.

68752281248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 911125 (or 911117 counting only the distinct ones).

The product of its digits is 3440640, while the sum is 53.

The spelling of 68752281248 in words is "sixty-eight billion, seven hundred fifty-two million, two hundred eighty-one thousand, two hundred forty-eight".

Divisors: 1 2 4 7 8 14 16 28 32 56 112 224 337 674 1348 2359 2696 4718 5392 9436 10784 18872 37744 75488 910771 1821542 3643084 6375397 7286168 12750794 14572336 25501588 29144672 51003176 102006352 204012704 306929827 613859654 1227719308 2148508789 2455438616 4297017578 4910877232 8594035156 9821754464 17188070312 34376140624 68752281248