Base | Representation |
---|---|
bin | 111111110010001010… |
… | …111111110011010110 |
3 | 20112210000021101102021 |
4 | 333302022333303112 |
5 | 2110230243302421 |
6 | 51243540203354 |
7 | 4643116650640 |
oct | 776212776326 |
9 | 215700241367 |
10 | 68487478486 |
11 | 2705543a299 |
12 | 1133439955a |
13 | 65c5c8cbcb |
14 | 3459bb3890 |
15 | 1bac941341 |
hex | ff22bfcd6 |
68487478486 has 16 divisors (see below), whose sum is σ = 117416805120. Its totient is φ = 29349351720.
The previous prime is 68487478439. The next prime is 68487478487.
68487478486 is nontrivially palindromic in base 10.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68487478487) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20946 + ... + 370693.
It is an arithmetic number, because the mean of its divisors is an integer number (7338550320).
Almost surely, 268487478486 is an apocalyptic number.
68487478486 is a deficient number, since it is larger than the sum of its proper divisors (48929326634).
68487478486 is a wasteful number, since it uses less digits than its factorization.
68487478486 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 404139.
The product of its digits is 462422016, while the sum is 70.
The spelling of 68487478486 in words is "sixty-eight billion, four hundred eighty-seven million, four hundred seventy-eight thousand, four hundred eighty-six".
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