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68006680008 = 2335059560113
BaseRepresentation
bin111111010101100000…
…111001010111001000
320111112111120021220020
4333111200321113020
52103234202230013
651124123100440
74625161146051
oct772540712710
9214474507806
1068006680008
1126928aa8283
121121b371720
13654a49b977
143411db9728
151b8061c623
hexfd58395c8

68006680008 has 32 divisors (see below), whose sum is σ = 170050610400. Its totient is φ = 22664371968.

The previous prime is 68006679989. The next prime is 68006680009. The reversal of 68006680008 is 80008660086.

It is not an unprimeable number, because it can be changed into a prime (68006680009) 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 7 ways as a sum of consecutive naturals, for example, 158641 + ... + 401472.

It is an arithmetic number, because the mean of its divisors is an integer number (5314081575).

Almost surely, 268006680008 is an apocalyptic number.

It is an amenable number.

68006680008 is an abundant number, since it is smaller than the sum of its proper divisors (102043930392).

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

68006680008 is a wasteful number, since it uses less digits than its factorization.

68006680008 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 565181 (or 565177 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 42.

The spelling of 68006680008 in words is "sixty-eight billion, six million, six hundred eighty thousand, eight".

Divisors: 1 2 3 4 6 8 12 24 5059 10118 15177 20236 30354 40472 60708 121416 560113 1120226 1680339 2240452 3360678 4480904 6721356 13442712 2833611667 5667223334 8500835001 11334446668 17001670002 22668893336 34003340004 68006680008