Base | Representation |
---|---|
bin | 111111110010000110… |
… | …100110100000000000 |
3 | 20112202221002211212200 |
4 | 333302012212200000 |
5 | 2110224444420042 |
6 | 51243455353200 |
7 | 4643104111500 |
oct | 776206464000 |
9 | 215687084780 |
10 | 68486326272 |
11 | 27054822651 |
12 | 11333b22800 |
13 | 65c5978620 |
14 | 3459993a00 |
15 | 1bac7b4c4c |
hex | ff21a6800 |
68486326272 has 864 divisors, whose sum is σ = 261686224800. Its totient is φ = 17055940608.
The previous prime is 68486326213. The next prime is 68486326273. The reversal of 68486326272 is 27262368486.
68486326272 is a `hidden beast` number, since 6 + 8 + 4 + 8 + 6 + 3 + 2 + 627 + 2 = 666.
It is a nude number because it is divisible by every one of its digits.
It is not an unprimeable number, because it can be changed into a prime (68486326273) by changing a digit.
It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 223082343 + ... + 223082649.
It is an arithmetic number, because the mean of its divisors is an integer number (302877575).
Almost surely, 268486326272 is an apocalyptic number.
It is an amenable number.
It is a practical number, because each smaller number is the sum of distinct divisors of 68486326272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130843112400).
68486326272 is an abundant number, since it is smaller than the sum of its proper divisors (193199898528).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68486326272 is a wasteful number, since it uses less digits than its factorization.
68486326272 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 381 (or 351 counting only the distinct ones).
The product of its digits is 9289728, while the sum is 54.
The spelling of 68486326272 in words is "sixty-eight billion, four hundred eighty-six million, three hundred twenty-six thousand, two hundred seventy-two".
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