Base | Representation |
---|---|
bin | 111111101100001001… |
… | …010010101000101101 |
3 | 20112111222000102222010 |
4 | 333230021102220231 |
5 | 2110023402234140 |
6 | 51225525111433 |
7 | 4640451352212 |
oct | 775411225055 |
9 | 215458012863 |
10 | 68386368045 |
11 | 2700335a546 |
12 | 11306558579 |
13 | 65ab04ab48 |
14 | 344a5b3b09 |
15 | 1ba3b1c880 |
hex | fec252a2d |
68386368045 has 16 divisors (see below), whose sum is σ = 110440791360. Its totient is φ = 36131862144.
The previous prime is 68386368023. The next prime is 68386368047. The reversal of 68386368045 is 54086368386.
It is not a de Polignac number, because 68386368045 - 214 = 68386351661 is a prime.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68386368047) by changing a digit.
It is a pernicious number, because its binary representation contains a prime number (19) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21302560 + ... + 21305769.
It is an arithmetic number, because the mean of its divisors is an integer number (6902549460).
Almost surely, 268386368045 is an apocalyptic number.
It is an amenable number.
68386368045 is a deficient number, since it is larger than the sum of its proper divisors (42054423315).
68386368045 is a wasteful number, since it uses less digits than its factorization.
68386368045 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 42608444.
The product of its (nonzero) digits is 19906560, while the sum is 57.
The spelling of 68386368045 in words is "sixty-eight billion, three hundred eighty-six million, three hundred sixty-eight thousand, forty-five".
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