Base | Representation |
---|---|
bin | 11110111110001101001000… |
… | …01111001001000110011010 |
3 | 22221011001210020101101200100 |
4 | 33133012210033021012122 |
5 | 32411340242233024110 |
6 | 400504223532320230 |
7 | 20226434005455534 |
oct | 1737064417110632 |
9 | 287131706341610 |
10 | 68108051845530 |
11 | 1a77950a76a134 |
12 | 777b968913076 |
13 | 2c0073c178608 |
14 | 12b6639558854 |
15 | 7d19a7a8ebc0 |
hex | 3df1a43c919a |
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".
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