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68135711052426 = 2379143746225849
BaseRepresentation
bin11110111111000000101001…
…10110101001001010001010
322221020201011212001200120120
433133200110312221022022
532412313414012134201
6400525040305204110
720231433303032643
oct1737402466511212
9287221155050516
1068135711052426
111a78a21365a706
1277851a7930636
132c032295b4a24
1412b7b00b566ca
157d2575e3a536
hex3df814da928a

68135711052426 has 16 divisors (see below), whose sum is σ = 137996376816000. Its totient is φ = 22424411232288.

The previous prime is 68135711052379. The next prime is 68135711052427. The reversal of 68135711052426 is 62425011753186.

68135711052426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (68135711052427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71873112451 + ... + 71873113398.

It is an arithmetic number, because the mean of its divisors is an integer number (8624773551000).

Almost surely, 268135711052426 is an apocalyptic number.

68135711052426 is an abundant number, since it is smaller than the sum of its proper divisors (69860665763574).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68135711052426 is a wasteful number, since it uses less digits than its factorization.

68135711052426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143746225933.

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 68135711052426 in words is "sixty-eight trillion, one hundred thirty-five billion, seven hundred eleven million, fifty-two thousand, four hundred twenty-six".

Divisors: 1 2 3 6 79 158 237 474 143746225849 287492451698 431238677547 862477355094 11355951842071 22711903684142 34067855526213 68135711052426