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68182890000 = 2435417912697
BaseRepresentation
bin111111100000000001…
…000101011000010000
320111222210010200120020
4333200001011120100
52104114304440000
651153415543440
74632431000601
oct774001053020
9214883120506
1068182890000
1126a09511475
121126a38ab80
136577b46734
14342b567da8
151b90d27ba0
hexfe0045610

68182890000 has 200 divisors, whose sum is σ = 221350520160. Its totient is φ = 18079104000.

The previous prime is 68182889969. The next prime is 68182890001. The reversal of 68182890000 is 9828186.

It is a tau number, because it is divible by the number of its divisors (200).

It is not an unprimeable number, because it can be changed into a prime (68182890001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 5363652 + ... + 5376348.

Almost surely, 268182890000 is an apocalyptic number.

68182890000 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 68182890000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110675260080).

68182890000 is an abundant number, since it is smaller than the sum of its proper divisors (153167630160).

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

68182890000 is a wasteful number, since it uses less digits than its factorization.

68182890000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12907 (or 12886 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 42.

The spelling of 68182890000 in words is "sixty-eight billion, one hundred eighty-two million, eight hundred ninety thousand".