Base | Representation |
---|---|
bin | 111111011000010101… |
… | …110001000100110011 |
3 | 20111122210210011211212 |
4 | 333120111301010303 |
5 | 2103333322003011 |
6 | 51132535230335 |
7 | 4626305153462 |
oct | 773025610463 |
9 | 214583704755 |
10 | 68054094131 |
11 | 26952842201 |
12 | 112332183ab |
13 | 655726006a |
14 | 34183dc9d9 |
15 | 1b8488608b |
hex | fd8571133 |
68054094131 has 4 divisors (see below), whose sum is σ = 68075304600. Its totient is φ = 68032883664.
The previous prime is 68054094089. The next prime is 68054094149. The reversal of 68054094131 is 13149045086.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13149045086 = 2 ⋅6574522543.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-68054094131 is a prime.
It is a super-2 number, since 2×680540941312 (a number of 22 digits) contains 22 as substring.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (68054094161) 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 3 ways as a sum of consecutive naturals, for example, 10600421 + ... + 10606838.
It is an arithmetic number, because the mean of its divisors is an integer number (17018826150).
Almost surely, 268054094131 is an apocalyptic number.
68054094131 is a deficient number, since it is larger than the sum of its proper divisors (21210469).
68054094131 is a wasteful number, since it uses less digits than its factorization.
68054094131 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 21210468.
The product of its (nonzero) digits is 103680, while the sum is 41.
The spelling of 68054094131 in words is "sixty-eight billion, fifty-four million, ninety-four thousand, one hundred thirty-one".
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