Base | Representation |
---|---|
bin | 111111101010000010… |
… | …110101101101101101 |
3 | 20112102111200202212121 |
4 | 333222002311231231 |
5 | 2104440341403120 |
6 | 51222225432541 |
7 | 4636542644665 |
oct | 775202655555 |
9 | 215374622777 |
10 | 68351122285 |
11 | 26a95476916 |
12 | 112b679b751 |
13 | 65a395a274 |
14 | 3445a3b1a5 |
15 | 1ba09a95aa |
hex | fea0b5b6d |
68351122285 has 16 divisors (see below), whose sum is σ = 82869742512. Its totient is φ = 54115776000.
The previous prime is 68351122249. The next prime is 68351122297. The reversal of 68351122285 is 58222115386.
It can be written as a sum of positive squares in 8 ways, for example, as 2082461956 + 66268660329 = 45634^2 + 257427^2 .
It is not a de Polignac number, because 68351122285 - 211 = 68351120237 is a prime.
It is a Duffinian 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, 1171915 + ... + 1228855.
It is an arithmetic number, because the mean of its divisors is an integer number (5179358907).
Almost surely, 268351122285 is an apocalyptic number.
It is an amenable number.
68351122285 is a deficient number, since it is larger than the sum of its proper divisors (14518620227).
68351122285 is a wasteful number, since it uses less digits than its factorization.
68351122285 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 59424.
The product of its digits is 230400, while the sum is 43.
The spelling of 68351122285 in words is "sixty-eight billion, three hundred fifty-one million, one hundred twenty-two thousand, two hundred eighty-five".
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