Base | Representation |
---|---|
bin | 100101010010000001… |
… | …0111000100011011001 |
3 | 21122122122002020101210 |
4 | 1022210002320203121 |
5 | 2302431234140211 |
6 | 100440234333333 |
7 | 5533000426614 |
oct | 1124402704331 |
9 | 248578066353 |
10 | 80061630681 |
11 | 30a5478112a |
12 | 1362458a249 |
13 | 771bb33086 |
14 | 3c3701d17b |
15 | 2138ae49a6 |
hex | 12a40b88d9 |
80061630681 has 8 divisors (see below), whose sum is σ = 106767470944. Its totient is φ = 53365105440.
The previous prime is 80061630661. The next prime is 80061630683. The reversal of 80061630681 is 18603616008.
It is a sphenic number, since it is the product of 3 distinct primes.
It is not a de Polignac number, because 80061630681 - 218 = 80061368537 is a prime.
It is a super-3 number, since 3×800616306813 (a number of 34 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (80061630683) 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, 2308675 + ... + 2343096.
It is an arithmetic number, because the mean of its divisors is an integer number (13345933868).
Almost surely, 280061630681 is an apocalyptic number.
It is an amenable number.
80061630681 is a deficient number, since it is larger than the sum of its proper divisors (26705840263).
80061630681 is a wasteful number, since it uses less digits than its factorization.
80061630681 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 4657511.
The product of its (nonzero) digits is 41472, while the sum is 39.
The spelling of 80061630681 in words is "eighty billion, sixty-one million, six hundred thirty thousand, six hundred eighty-one".
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