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68185258186 = 279431552267
BaseRepresentation
bin111111100000001010…
…000111100011001010
320111222221121000002211
4333200022013203022
52104120411230221
651153542415334
74632460063123
oct774012074312
9214887530084
1068185258186
1126a0a889751
121126b13154a
136578495626
14342b9c304a
151b911446e1
hexfe02878ca

68185258186 has 8 divisors (see below), whose sum is σ = 103572544320. Its totient is φ = 33661076748.

The previous prime is 68185258177. The next prime is 68185258241.

68185258186 is nontrivially palindromic in base 10.

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

It is a self number, because there is not a number n which added to its sum of digits gives 68185258186.

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 3 ways as a sum of consecutive naturals, for example, 215775976 + ... + 215776291.

It is an arithmetic number, because the mean of its divisors is an integer number (12946568040).

Almost surely, 268185258186 is an apocalyptic number.

68185258186 is a deficient number, since it is larger than the sum of its proper divisors (35387286134).

68185258186 is a wasteful number, since it uses less digits than its factorization.

68185258186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 431552348.

The product of its digits is 7372800, while the sum is 58.

The spelling of 68185258186 in words is "sixty-eight billion, one hundred eighty-five million, two hundred fifty-eight thousand, one hundred eighty-six".

Divisors: 1 2 79 158 431552267 863104534 34092629093 68185258186