Base | Representation |
---|---|
bin | 111111010110111101… |
… | …101110000011011110 |
3 | 20111121012100112121100 |
4 | 333112331232003132 |
5 | 2103311414404321 |
6 | 51130352413530 |
7 | 4625605033011 |
oct | 772675560336 |
9 | 214535315540 |
10 | 68031013086 |
11 | 26940808063 |
12 | 112275472a6 |
13 | 655253b43a |
14 | 3415311378 |
15 | 1b82827326 |
hex | fd6f6e0de |
68031013086 has 24 divisors (see below), whose sum is σ = 147462321240. Its totient is φ = 22667497776.
The previous prime is 68031013081. The next prime is 68031013109.
68031013086 is nontrivially palindromic in base 10.
It is a self number, because there is not a number n which added to its sum of digits gives 68031013086.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68031013081) by changing a digit.
It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 748020 + ... + 834023.
It is an arithmetic number, because the mean of its divisors is an integer number (6144263385).
Almost surely, 268031013086 is an apocalyptic number.
68031013086 is an abundant number, since it is smaller than the sum of its proper divisors (79431308154).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
68031013086 is a wasteful number, since it uses less digits than its factorization.
68031013086 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1584440 (or 1584437 counting only the distinct ones).
The product of its (nonzero) digits is 20736, while the sum is 36.
It can be divided in two parts, 680310 and 13086, that added together give a palindrome (693396).
The spelling of 68031013086 in words is "sixty-eight billion, thirty-one million, thirteen thousand, eighty-six".
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