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68165369147 is a prime number
BaseRepresentation
bin111111011110111110…
…001111110100111011
320111221120011112110202
4333132332033310323
52104100313303042
651151552232415
74632126035441
oct773676176473
9214846145422
1068165369147
11269aa634827
121126453b70b
136574320875
1434290c6b91
151b8e516632
hexfdef8fd3b

68165369147 has 2 divisors, whose sum is σ = 68165369148. Its totient is φ = 68165369146.

The previous prime is 68165369117. The next prime is 68165369161. The reversal of 68165369147 is 74196356186.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-68165369147 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68165369092 and 68165369101.

It is not a weakly prime, because it can be changed into another prime (68165369117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34082684573 + 34082684574.

It is an arithmetic number, because the mean of its divisors is an integer number (34082684574).

Almost surely, 268165369147 is an apocalyptic number.

68165369147 is a deficient number, since it is larger than the sum of its proper divisors (1).

68165369147 is an equidigital number, since it uses as much as digits as its factorization.

68165369147 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6531840, while the sum is 56.

The spelling of 68165369147 in words is "sixty-eight billion, one hundred sixty-five million, three hundred sixty-nine thousand, one hundred forty-seven".