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68179497186 = 2317432361507
BaseRepresentation
bin111111011111110100…
…001001000011100010
320111222112202022111110
4333133310021003202
52104112422402221
651153215124150
74632360110163
oct773764110342
9214875668443
1068179497186
1126a07604399
1211269213656
136577229358
14342ad2376a
151b908a7776
hexfdfd090e2

68179497186 has 48 divisors (see below), whose sum is σ = 147816283104. Its totient is φ = 20892154752.

The previous prime is 68179497179. The next prime is 68179497209.

It is a happy number.

68179497186 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7845 + ... + 369351.

It is an arithmetic number, because the mean of its divisors is an integer number (3079505898).

Almost surely, 268179497186 is an apocalyptic number.

68179497186 is an abundant number, since it is smaller than the sum of its proper divisors (79636785918).

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

68179497186 is a wasteful number, since it uses less digits than its factorization.

68179497186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361615 (or 361572 counting only the distinct ones).

The product of its digits is 36578304, while the sum is 66.

The spelling of 68179497186 in words is "sixty-eight billion, one hundred seventy-nine million, four hundred ninety-seven thousand, one hundred eighty-six".

Divisors: 1 2 3 6 17 34 43 51 86 102 129 258 731 1462 1849 2193 3698 4386 5547 11094 31433 62866 94299 188598 361507 723014 1084521 2169042 6145619 12291238 15544801 18436857 31089602 36873714 46634403 93268806 264261617 528523234 668426443 792784851 1336852886 1585569702 2005279329 4010558658 11363249531 22726499062 34089748593 68179497186