Base | Representation |
---|---|
bin | 111111111001001111… |
… | …111111101000110010 |
3 | 20120002021201112120000 |
4 | 333321033333220302 |
5 | 2111001143312132 |
6 | 51303421330430 |
7 | 4646061216321 |
oct | 777117775062 |
9 | 216067645500 |
10 | 68606229042 |
11 | 2710647834a |
12 | 11368106a16 |
13 | 661476a200 |
14 | 346b8860b8 |
15 | 1bb809b87c |
hex | ff93ffa32 |
68606229042 has 90 divisors (see below), whose sum is σ = 166568923917. Its totient is φ = 21096273744.
The previous prime is 68606229037. The next prime is 68606229103. The reversal of 68606229042 is 24092260686.
It can be written as a sum of positive squares in 2 ways, for example, as 58660355601 + 9945873441 = 242199^2 + 99729^2 .
It is an ABA number since it can be written as A⋅BA, here for A=2, B=185211.
It is an unprimeable number.
It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 43338583 + ... + 43340165.
Almost surely, 268606229042 is an apocalyptic number.
It is a practical number, because each smaller number is the sum of distinct divisors of 68606229042
68606229042 is an abundant number, since it is smaller than the sum of its proper divisors (97962694875).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68606229042 is an equidigital number, since it uses as much as digits as its factorization.
68606229042 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3206 (or 1601 counting only the distinct ones).
The product of its (nonzero) digits is 497664, while the sum is 45.
The spelling of 68606229042 in words is "sixty-eight billion, six hundred six million, two hundred twenty-nine thousand, forty-two".
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