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68789803868 = 2248735313041
BaseRepresentation
bin100000000010000110…
…0010001101101011100
320120120002011002212122
41000010030101231130
52111340142210433
651333540122112
74653450454022
oct1000414215534
9216502132778
1068789803868
11271a0061885
12113b9696338
1366437c3276
143487dd0712
151bc925e198
hex1004311b5c

68789803868 has 12 divisors (see below), whose sum is σ = 120629351472. Its totient is φ = 34324274880.

The previous prime is 68789803847. The next prime is 68789803871. The reversal of 68789803868 is 86830898786.

It is a super-2 number, since 2×687898038682 (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17654573 + ... + 17658468.

It is an arithmetic number, because the mean of its divisors is an integer number (10052445956).

Almost surely, 268789803868 is an apocalyptic number.

It is an amenable number.

68789803868 is a deficient number, since it is larger than the sum of its proper divisors (51839547604).

68789803868 is a wasteful number, since it uses less digits than its factorization.

68789803868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35313532 (or 35313530 counting only the distinct ones).

The product of its (nonzero) digits is 222953472, while the sum is 71.

The spelling of 68789803868 in words is "sixty-eight billion, seven hundred eighty-nine million, eight hundred three thousand, eight hundred sixty-eight".

Divisors: 1 2 4 487 974 1948 35313041 70626082 141252164 17197450967 34394901934 68789803868