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68630716661760 = 214335114760017
BaseRepresentation
bin11111001101011010101010…
…11111001100000000000000
3100000000000212122110001211000
433212231111133030000000
532443421201431134020
6401544303241252000
720312256065216511
oct1746552537140000
9300000778401730
1068630716661760
111a96013a3a1510
127845114194000
132c3ab05ab9146
1412d3a5c938a08
157e0398374090
hex3e6b557cc000

68630716661760 has 960 divisors, whose sum is σ = 271864139581440. Its totient is φ = 16283483504640.

The previous prime is 68630716661693. The next prime is 68630716661789. The reversal of 68630716661760 is 6716661703686.

It is a tau number, because it is divible by the number of its divisors (960).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1143491272 + ... + 1143551288.

It is an arithmetic number, because the mean of its divisors is an integer number (283191812064).

Almost surely, 268630716661760 is an apocalyptic number.

68630716661760 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 68630716661760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135932069790720).

68630716661760 is an abundant number, since it is smaller than the sum of its proper divisors (203233422919680).

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

68630716661760 is a wasteful number, since it uses less digits than its factorization.

68630716661760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60117 (or 60085 counting only the distinct ones).

The product of its (nonzero) digits is 54867456, while the sum is 63.

The spelling of 68630716661760 in words is "sixty-eight trillion, six hundred thirty billion, seven hundred sixteen million, six hundred sixty-one thousand, seven hundred sixty".