Base | Representation |
---|---|
bin | 111111100111110110… |
… | …101110010010100101 |
3 | 20112022221120200000012 |
4 | 333213312232102211 |
5 | 2104401441013332 |
6 | 51214434300005 |
7 | 4635615514535 |
oct | 774766562245 |
9 | 215287520005 |
10 | 68314391717 |
11 | 26a76769680 |
12 | 112a6427605 |
13 | 65991698c0 |
14 | 3440bd94c5 |
15 | 1b9c6513b2 |
hex | fe7dae4a5 |
68314391717 has 32 divisors (see below), whose sum is σ = 80644032000. Its totient is φ = 57051371520.
The previous prime is 68314391683. The next prime is 68314391723. The reversal of 68314391717 is 71719341386.
It is not a de Polignac number, because 68314391717 - 26 = 68314391653 is a prime.
It is a super-2 number, since 2×683143917172 (a number of 22 digits) contains 22 as substring.
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68314391317) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (23) of ones.
It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34173284 + ... + 34175282.
It is an arithmetic number, because the mean of its divisors is an integer number (2520126000).
Almost surely, 268314391717 is an apocalyptic number.
It is an amenable number.
68314391717 is a deficient number, since it is larger than the sum of its proper divisors (12329640283).
68314391717 is a wasteful number, since it uses less digits than its factorization.
68314391717 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3053.
The product of its digits is 762048, while the sum is 50.
The spelling of 68314391717 in words is "sixty-eight billion, three hundred fourteen million, three hundred ninety-one thousand, seven hundred seventeen".
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