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68262684081 = 3181125713967
BaseRepresentation
bin111111100100110001…
…011110010110110001
320112012100021122110120
4333210301132112301
52104300221342311
651205350120453
74634420145444
oct774461362661
9215170248416
1068262684081
1126a4a561999
1211291050129
13658b534177
143437db965b
151b97d3a706
hexfe4c5e5b1

68262684081 has 8 divisors (see below), whose sum is σ = 91519768704. Its totient is φ = 45257027760.

The previous prime is 68262684041. The next prime is 68262684103. The reversal of 68262684081 is 18048626286.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 68262684081 - 215 = 68262651313 is a prime.

It is a super-2 number, since 2×682626840812 (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68262684001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62856441 + ... + 62857526.

It is an arithmetic number, because the mean of its divisors is an integer number (11439971088).

Almost surely, 268262684081 is an apocalyptic number.

It is an amenable number.

68262684081 is a deficient number, since it is larger than the sum of its proper divisors (23257084623).

68262684081 is a wasteful number, since it uses less digits than its factorization.

68262684081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125714151.

The product of its (nonzero) digits is 1769472, while the sum is 51.

The spelling of 68262684081 in words is "sixty-eight billion, two hundred sixty-two million, six hundred eighty-four thousand, eighty-one".

Divisors: 1 3 181 543 125713967 377141901 22754228027 68262684081