Base | Representation |
---|---|
bin | 111111101100111101… |
… | …010100001101111010 |
3 | 20112112220200022201221 |
4 | 333230331110031322 |
5 | 2110040400143020 |
6 | 51231133302254 |
7 | 4641005313100 |
oct | 775475241572 |
9 | 215486608657 |
10 | 68400006010 |
11 | 27010024996 |
12 | 1130b03498a |
13 | 65b0b1454b |
14 | 344c323c70 |
15 | 1ba4e136aa |
hex | fecf5437a |
68400006010 has 48 divisors (see below), whose sum is σ = 143553980160. Its totient is φ = 23396946720.
The previous prime is 68400005941. The next prime is 68400006011. The reversal of 68400006010 is 1060000486.
It is a super-3 number, since 3×684000060103 (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.
It is not an unprimeable number, because it can be changed into a prime (68400006011) 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 23 ways as a sum of consecutive naturals, for example, 49251 + ... + 373129.
It is an arithmetic number, because the mean of its divisors is an integer number (2990707920).
Almost surely, 268400006010 is an apocalyptic number.
68400006010 is an abundant number, since it is smaller than the sum of its proper divisors (75153974150).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68400006010 is a wasteful number, since it uses less digits than its factorization.
68400006010 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 324331 (or 324324 counting only the distinct ones).
The product of its (nonzero) digits is 1152, while the sum is 25.
Adding to 68400006010 its reverse (1060000486), we get a palindrome (69460006496).
The spelling of 68400006010 in words is "sixty-eight billion, four hundred million, six thousand, ten".
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