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68929509744 = 2432691769203
BaseRepresentation
bin100000000110010000…
…1001101100101110000
320120220211000220022100
41000030201031211300
52112131423302434
651355450340400
74660065110544
oct1001441154560
9216824026270
1068929509744
1127261a02987
121143842a700
136666729774
14349c799a24
151bd6658699
hex100c84d970

68929509744 has 60 divisors (see below), whose sum is σ = 192937568616. Its totient is φ = 22972849536.

The previous prime is 68929509721. The next prime is 68929509793. The reversal of 68929509744 is 44790592986.

68929509744 is a `hidden beast` number, since 6 + 89 + 2 + 9 + 509 + 7 + 44 = 666.

It is a super-4 number, since 4×689295097444 (a number of 44 digits) contains 4444 as substring.

It is a congruent number.

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 11 ways as a sum of consecutive naturals, for example, 961447 + ... + 1030649.

Almost surely, 268929509744 is an apocalyptic number.

It is an amenable number.

68929509744 is an abundant number, since it is smaller than the sum of its proper divisors (124008058872).

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

68929509744 is a wasteful number, since it uses less digits than its factorization.

68929509744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76134 (or 76125 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 63.

The spelling of 68929509744 in words is "sixty-eight billion, nine hundred twenty-nine million, five hundred nine thousand, seven hundred forty-four".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 36 48 72 144 6917 13834 20751 27668 41502 55336 62253 69203 83004 110672 124506 138406 166008 207609 249012 276812 332016 415218 498024 553624 622827 830436 996048 1107248 1245654 1660872 2491308 3321744 4982616 9965232 478677151 957354302 1436031453 1914708604 2872062906 3829417208 4308094359 5744125812 7658834416 8616188718 11488251624 17232377436 22976503248 34464754872 68929509744