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68484660882 = 23114194575419
BaseRepresentation
bin111111110010000000…
…001111111010010010
320112202210222020101120
4333302000033322102
52110224033122012
651243355543110
74643054004231
oct776200177222
9215683866346
1068484660882
11270538953a0
121133345aa96
1365c55145a1
14345967cb18
151bac58658c
hexff200fe92

68484660882 has 64 divisors (see below), whose sum is σ = 150133132800. Its totient is φ = 20654282880.

The previous prime is 68484660877. The next prime is 68484660883. The reversal of 68484660882 is 28806648486.

It is a super-2 number, since 2×684846608822 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68484660883) 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 31 ways as a sum of consecutive naturals, for example, 12635169 + ... + 12640587.

It is an arithmetic number, because the mean of its divisors is an integer number (2345830200).

Almost surely, 268484660882 is an apocalyptic number.

68484660882 is an abundant number, since it is smaller than the sum of its proper divisors (81648471918).

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

68484660882 is a wasteful number, since it uses less digits than its factorization.

68484660882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6311.

The product of its (nonzero) digits is 28311552, while the sum is 60.

The spelling of 68484660882 in words is "sixty-eight billion, four hundred eighty-four million, six hundred sixty thousand, eight hundred eighty-two".

Divisors: 1 2 3 6 11 22 33 66 419 457 838 914 1257 1371 2514 2742 4609 5027 5419 9218 10054 10838 13827 15081 16257 27654 30162 32514 59609 119218 178827 191483 357654 382966 574449 1148898 2106313 2270561 2476483 4212626 4541122 4952966 6318939 6811683 7429449 12637878 13623366 14858898 24976171 27241313 49952342 54482626 74928513 81723939 149857026 163447878 1037646377 2075292754 3112939131 6225878262 11414110147 22828220294 34242330441 68484660882