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68295408025680 = 243251161895233037
BaseRepresentation
bin11111000011101010000111…
…00010010000000001010000
322221210222101102002111000200
433201311003202100001100
532422422443423310210
6401130251033415200
720246115606642153
oct1741650342200120
9287728342074020
1068295408025680
111a840a13411340
1277b0135b6a500
132c152c9b33c84
1412c1730309c9a
157d67c0ebc0c0
hex3e1d43890050

68295408025680 has 960 divisors, whose sum is σ = 257745325743360. Its totient is φ = 16065987379200.

The previous prime is 68295408025667. The next prime is 68295408025697. The reversal of 68295408025680 is 8652080459286.

68295408025680 is a `hidden beast` number, since 6 + 8 + 2 + 9 + 540 + 8 + 0 + 2 + 5 + 6 + 80 = 666.

It is a congruent number.

It is an unprimeable number.

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 191 ways as a sum of consecutive naturals, for example, 22487785122 + ... + 22487788158.

It is an arithmetic number, because the mean of its divisors is an integer number (268484714316).

Almost surely, 268295408025680 is an apocalyptic number.

68295408025680 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 68295408025680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128872662871680).

68295408025680 is an abundant number, since it is smaller than the sum of its proper divisors (189449917717680).

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

68295408025680 is a wasteful number, since it uses less digits than its factorization.

68295408025680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3740 (or 3731 counting only the distinct ones).

The product of its (nonzero) digits is 66355200, while the sum is 63.

The spelling of 68295408025680 in words is "sixty-eight trillion, two hundred ninety-five billion, four hundred eight million, twenty-five thousand, six hundred eighty".