Base | Representation |
---|---|
bin | 111111101000000010… |
… | …110011010011010001 |
3 | 20112100011112112021210 |
4 | 333220002303103101 |
5 | 2104403243323334 |
6 | 51215030210333 |
7 | 4635654442563 |
oct | 775002632321 |
9 | 215304475253 |
10 | 68317557969 |
11 | 26a78531511 |
12 | 112a74b39a9 |
13 | 6599a07b1b |
14 | 34413c1333 |
15 | 1b9ca795e9 |
hex | fe80b34d1 |
68317557969 has 8 divisors (see below), whose sum is σ = 94231114560. Its totient is φ = 43974520016.
The previous prime is 68317557947. The next prime is 68317557989. The reversal of 68317557969 is 96975571386.
68317557969 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
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 68317557969 - 217 = 68317426897 is a prime.
It is a super-3 number, since 3×683175579693 (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 (68317557989) 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, 392629557 + ... + 392629730.
It is an arithmetic number, because the mean of its divisors is an integer number (11778889320).
Almost surely, 268317557969 is an apocalyptic number.
It is an amenable number.
68317557969 is a deficient number, since it is larger than the sum of its proper divisors (25913556591).
68317557969 is a wasteful number, since it uses less digits than its factorization.
68317557969 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 785259319.
The product of its digits is 85730400, while the sum is 66.
The spelling of 68317557969 in words is "sixty-eight billion, three hundred seventeen million, five hundred fifty-seven thousand, nine hundred sixty-nine".
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