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68008282644 = 22356113100999
BaseRepresentation
bin111111010101100111…
…000000101000010100
320111112121120201022010
4333111213000220110
52103240110021034
651124221304220
74625210602341
oct772547005024
9214477521263
1068008282644
11269299a2375
121121ba05070
13654a910283
1434122b57c8
151b808373e9
hexfd59c0a14

68008282644 has 24 divisors (see below), whose sum is σ = 158690392000. Its totient is φ = 22668799104.

The previous prime is 68008282631. The next prime is 68008282649. The reversal of 68008282644 is 44628280086.

It is a junction number, because it is equal to n+sod(n) for n = 68008282593 and 68008282602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68008282649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 622857 + ... + 723855.

Almost surely, 268008282644 is an apocalyptic number.

It is an amenable number.

68008282644 is an abundant number, since it is smaller than the sum of its proper divisors (90682109356).

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

68008282644 is a wasteful number, since it uses less digits than its factorization.

68008282644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157119 (or 157117 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 48.

The spelling of 68008282644 in words is "sixty-eight billion, eight million, two hundred eighty-two thousand, six hundred forty-four".

Divisors: 1 2 3 4 6 12 56113 100999 112226 168339 201998 224452 302997 336678 403996 605994 673356 1211988 5667356887 11334713774 17002070661 22669427548 34004141322 68008282644