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68739855893786 = 27211235111271217
BaseRepresentation
bin11111010000100101111101…
…01100010100010100011010
3100000101110120202011111111202
433220102332230110110122
533002213211102100121
6402110353121554202
720323201465330400
oct1750227654242432
9300343522144452
1068739855893786
111a9a2455675930
1278622b27a5962
132c481a9b7778c
1412d9053695470
157e3134ade40b
hex3e84beb1451a

68739855893786 has 48 divisors (see below), whose sum is σ = 130849076365632. Its totient is φ = 26781549379200.

The previous prime is 68739855893773. The next prime is 68739855893789.

It is a happy number.

68739855893786 is nontrivially palindromic in base 10.

68739855893786 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 68739855893695 and 68739855893704.

It is not an unprimeable number, because it can be changed into a prime (68739855893789) 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 23 ways as a sum of consecutive naturals, for example, 253314050 + ... + 253585266.

It is an arithmetic number, because the mean of its divisors is an integer number (2726022424284).

Almost surely, 268739855893786 is an apocalyptic number.

68739855893786 is a deficient number, since it is larger than the sum of its proper divisors (62109220471846).

68739855893786 is a wasteful number, since it uses less digits than its factorization.

68739855893786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506355 (or 506348 counting only the distinct ones).

The product of its digits is 131681894400, while the sum is 92.

The spelling of 68739855893786 in words is "sixty-eight trillion, seven hundred thirty-nine billion, eight hundred fifty-five million, eight hundred ninety-three thousand, seven hundred eighty-six".

Divisors: 1 2 7 11 14 22 49 77 98 154 539 1078 235111 271217 470222 542434 1645777 1898519 2586221 2983387 3291554 3797038 5172442 5966774 11520439 13289633 18103547 20883709 23040878 26579266 36207094 41767418 126724829 146185963 253449658 292371926 63766100087 127532200174 446362700609 701427100957 892725401218 1402854201914 3124538904263 4909989706699 6249077808526 9819979413398 34369927946893 68739855893786