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68108051845530 = 23253407222118031
BaseRepresentation
bin11110111110001101001000…
…01111001001000110011010
322221011001210020101101200100
433133012210033021012122
532411340242233024110
6400504223532320230
720226434005455534
oct1737064417110632
9287131706341610
1068108051845530
111a77950a76a134
12777b968913076
132c0073c178608
1412b6639558854
157d19a7a8ebc0
hex3df1a43c919a

68108051845530 has 48 divisors (see below), whose sum is σ = 177132911215104. Its totient is φ = 18156816244320.

The previous prime is 68108051845501. The next prime is 68108051845577. The reversal of 68108051845530 is 3554815080186.

68108051845530 is a `hidden beast` number, since 6 + 8 + 1 + 0 + 8 + 0 + 5 + 1 + 84 + 553 + 0 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110752386 + ... + 111365645.

It is an arithmetic number, because the mean of its divisors is an integer number (3690268983648).

Almost surely, 268108051845530 is an apocalyptic number.

68108051845530 is an abundant number, since it is smaller than the sum of its proper divisors (109024859369574).

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

68108051845530 is a wasteful number, since it uses less digits than its factorization.

68108051845530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222121451 (or 222121448 counting only the distinct ones).

The product of its (nonzero) digits is 4608000, while the sum is 54.

The spelling of 68108051845530 in words is "sixty-eight trillion, one hundred eight billion, fifty-one million, eight hundred forty-five thousand, five hundred thirty".

Divisors: 1 2 3 5 6 9 10 15 18 30 45 90 3407 6814 10221 17035 20442 30663 34070 51105 61326 102210 153315 306630 222118031 444236062 666354093 1110590155 1332708186 1999062279 2221180310 3331770465 3998124558 6663540930 9995311395 19990622790 756756131617 1513512263234 2270268394851 3783780658085 4540536789702 6810805184553 7567561316170 11351341974255 13621610369106 22702683948510 34054025922765 68108051845530