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68693393706 = 237219293113679
BaseRepresentation
bin111111111110011100…
…100000000100101010
320120022100201221222220
4333332130200010222
52111141002044311
651320213454510
74651200132600
oct777634400452
9216270657886
1068693393706
11271506a2463
1211391341436
136629838732
143479295870
151bc0a68206
hexffe72012a

68693393706 has 192 divisors, whose sum is σ = 179656704000. Its totient is φ = 17372154240.

The previous prime is 68693393701. The next prime is 68693393719. The reversal of 68693393706 is 60739339686.

It is a self number, because there is not a number n which added to its sum of digits gives 68693393706.

It is not an unprimeable number, because it can be changed into a prime (68693393701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 5014975 + ... + 5028653.

It is an arithmetic number, because the mean of its divisors is an integer number (935712000).

Almost surely, 268693393706 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68693393706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89828352000).

68693393706 is an abundant number, since it is smaller than the sum of its proper divisors (110963310294).

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

68693393706 is a wasteful number, since it uses less digits than its factorization.

68693393706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13777 (or 13770 counting only the distinct ones).

The product of its (nonzero) digits is 26453952, while the sum is 60.

The spelling of 68693393706 in words is "sixty-eight billion, six hundred ninety-three million, three hundred ninety-three thousand, seven hundred six".