Base | Representation |
---|---|
bin | 100000000111100000… |
… | …1000101000110000010 |
3 | 20121000201220001121110 |
4 | 1000033001011012002 |
5 | 2112223140333421 |
6 | 51403544504150 |
7 | 4661114244162 |
oct | 1001701050602 |
9 | 217021801543 |
10 | 68971417986 |
11 | 27283627199 |
12 | 1144a47b056 |
13 | 6672310a43 |
14 | 34a41885a2 |
15 | 1bda185a76 |
hex | 100f045182 |
68971417986 has 32 divisors (see below), whose sum is σ = 141719054400. Its totient is φ = 22361524416.
The previous prime is 68971417939. The next prime is 68971417993.
It is a happy number.
68971417986 is nontrivially palindromic in base 10.
It is a super-4 number, since 4×689714179864 (a number of 44 digits) contains 4444 as substring.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (11) of ones.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 623065 + ... + 725363.
It is an arithmetic number, because the mean of its divisors is an integer number (4428720450).
Almost surely, 268971417986 is an apocalyptic number.
68971417986 is an abundant number, since it is smaller than the sum of its proper divisors (72747636414).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68971417986 is a wasteful number, since it uses less digits than its factorization.
68971417986 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 105378.
The product of its digits is 36578304, while the sum is 66.
The spelling of 68971417986 in words is "sixty-eight billion, nine hundred seventy-one million, four hundred seventeen thousand, nine hundred eighty-six".
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