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68868086886 = 2326615788207
BaseRepresentation
bin100000000100011011…
…0111001110001100110
320120202112110021222200
41000020312321301212
52112020212240021
651345414035330
74655421036264
oct1001066716146
9216675407880
1068868086886
112723026aa95
121141b948b46
136656aa1c91
14349456b434
151bd1074126
hex1008db9c66

68868086886 has 24 divisors (see below), whose sum is σ = 149439954144. Its totient is φ = 22921295760.

The previous prime is 68868086873. The next prime is 68868086887.

68868086886 is nontrivially palindromic in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68868086887) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2882206 + ... + 2906001.

It is an arithmetic number, because the mean of its divisors is an integer number (6226664756).

Almost surely, 268868086886 is an apocalyptic number.

68868086886 is an abundant number, since it is smaller than the sum of its proper divisors (80571867258).

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

68868086886 is a wasteful number, since it uses less digits than its factorization.

68868086886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5788876 (or 5788873 counting only the distinct ones).

The product of its (nonzero) digits is 339738624, while the sum is 72.

The spelling of 68868086886 in words is "sixty-eight billion, eight hundred sixty-eight million, eighty-six thousand, eight hundred eighty-six".

Divisors: 1 2 3 6 9 18 661 1322 1983 3966 5949 11898 5788207 11576414 17364621 34729242 52093863 104187726 3826004827 7652009654 11478014481 22956028962 34434043443 68868086886