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68067121326 = 23131811106781
BaseRepresentation
bin111111011001000111…
…011101100010101110
320111200201022000210120
4333121013131202232
52103400140340301
651134122345410
74626523661601
oct773107354256
9214621260716
1068067121326
112695a12a786
121123765b266
136559b71769
14341a030338
151b85aaae36
hexfd91dd8ae

68067121326 has 32 divisors (see below), whose sum is σ = 137343862656. Its totient is φ = 22487868000.

The previous prime is 68067121307. The next prime is 68067121361. The reversal of 68067121326 is 62312176086.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 584056 + ... + 690836.

It is an arithmetic number, because the mean of its divisors is an integer number (4291995708).

Almost surely, 268067121326 is an apocalyptic number.

68067121326 is an abundant number, since it is smaller than the sum of its proper divisors (69276741330).

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

68067121326 is a wasteful number, since it uses less digits than its factorization.

68067121326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107728.

The product of its (nonzero) digits is 145152, while the sum is 42.

The spelling of 68067121326 in words is "sixty-eight billion, sixty-seven million, one hundred twenty-one thousand, three hundred twenty-six".

Divisors: 1 2 3 6 131 262 393 786 811 1622 2433 4866 106241 106781 212482 213562 318723 320343 637446 640686 13988311 27976622 41964933 83929866 86599391 173198782 259798173 519596346 11344520221 22689040442 34033560663 68067121326