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68494281926 = 2753500318451
BaseRepresentation
bin111111110010100100…
…111100110011000110
320112210111002000222112
4333302210330303012
52110234014010201
651244342101022
74643231535020
oct776244746306
9215714060875
1068494281926
1127059266874
121133671a772
1365c7502805
14345aa65010
151bad3370bb
hexff293ccc6

68494281926 has 32 divisors (see below), whose sum is σ = 119664615168. Its totient is φ = 28793512800.

The previous prime is 68494281923. The next prime is 68494282027. The reversal of 68494281926 is 62918249486.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68494281923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3703001 + ... + 3721451.

It is an arithmetic number, because the mean of its divisors is an integer number (3739519224).

Almost surely, 268494281926 is an apocalyptic number.

68494281926 is a deficient number, since it is larger than the sum of its proper divisors (51170333242).

68494281926 is a wasteful number, since it uses less digits than its factorization.

68494281926 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23516.

The product of its digits is 11943936, while the sum is 59.

The spelling of 68494281926 in words is "sixty-eight billion, four hundred ninety-four million, two hundred eighty-one thousand, nine hundred twenty-six".

Divisors: 1 2 7 14 53 106 371 742 5003 10006 18451 35021 36902 70042 129157 258314 265159 530318 977903 1856113 1955806 3712226 6845321 13690642 92310353 184620706 646172471 1292344942 4892448709 9784897418 34247140963 68494281926