Base | Representation |
---|---|
bin | 111111011000011011… |
… | …000011110001010111 |
3 | 20111122220101122212100 |
4 | 333120123003301113 |
5 | 2103334200401211 |
6 | 51133025053143 |
7 | 4626323022210 |
oct | 773033036127 |
9 | 214586348770 |
10 | 68055481431 |
11 | 269535aa533 |
12 | 112337871b3 |
13 | 6557627652 |
14 | 3418680407 |
15 | 1b84a5c156 |
hex | fd86c3c57 |
68055481431 has 48 divisors (see below), whose sum is σ = 119054295360. Its totient is φ = 36632010240.
The previous prime is 68055481391. The next prime is 68055481453. The reversal of 68055481431 is 13418455086.
68055481431 is a `hidden beast` number, since 6 + 80 + 55 + 481 + 43 + 1 = 666.
It is not a de Polignac number, because 68055481431 - 211 = 68055479383 is a prime.
It is a super-2 number, since 2×680554814312 (a number of 22 digits) contains 22 as substring.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (68055481631) by changing a digit.
It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 379360 + ... + 529173.
It is an arithmetic number, because the mean of its divisors is an integer number (2480297820).
Almost surely, 268055481431 is an apocalyptic number.
68055481431 is a deficient number, since it is larger than the sum of its proper divisors (50998813929).
68055481431 is a wasteful number, since it uses less digits than its factorization.
68055481431 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 908616 (or 908613 counting only the distinct ones).
The product of its (nonzero) digits is 460800, while the sum is 45.
The spelling of 68055481431 in words is "sixty-eight billion, fifty-five million, four hundred eighty-one thousand, four hundred thirty-one".
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