Base | Representation |
---|---|
bin | 111111010110111010… |
… | …101100000111111111 |
3 | 20111121010212011222112 |
4 | 333112322230013333 |
5 | 2103311214000001 |
6 | 51130323404235 |
7 | 4625565214115 |
oct | 772672540777 |
9 | 214533764875 |
10 | 68030218751 |
11 | 26940315290 |
12 | 1122722367b |
13 | 6552320a11 |
14 | 3415185ab5 |
15 | 1b8271bcbb |
hex | fd6eac1ff |
68030218751 has 8 divisors (see below), whose sum is σ = 78120825600. Its totient is φ = 58590618840.
The previous prime is 68030218721. The next prime is 68030218799. The reversal of 68030218751 is 15781203086.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 68030218751 - 226 = 67963109887 is a prime.
It is a super-2 number, since 2×680302187512 (a number of 22 digits) contains 22 as substring.
It is a junction number, because it is equal to n+sod(n) for n = 68030218699 and 68030218708.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68030218721) 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, 162751511 + ... + 162751928.
It is an arithmetic number, because the mean of its divisors is an integer number (9765103200).
Almost surely, 268030218751 is an apocalyptic number.
68030218751 is a deficient number, since it is larger than the sum of its proper divisors (10090606849).
68030218751 is a wasteful number, since it uses less digits than its factorization.
68030218751 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 325503469.
The product of its (nonzero) digits is 80640, while the sum is 41.
The spelling of 68030218751 in words is "sixty-eight billion, thirty million, two hundred eighteen thousand, seven hundred fifty-one".
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