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68811413183 = 376918257207
BaseRepresentation
bin100000000010101111…
…0101101011010111111
320120121120210222021122
41000011132231122333
52111411210210213
651340031221155
74654132234652
oct1000536553277
9216546728248
1068811413183
1127201281217
12114049777bb
13664811b046
14348ac17899
151bcb0cbd08
hex10057ad6bf

68811413183 has 4 divisors (see below), whose sum is σ = 68829674160. Its totient is φ = 68793152208.

The previous prime is 68811413161. The next prime is 68811413239. The reversal of 68811413183 is 38131411886.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 38131411886 = 219065705943.

It is a cyclic number.

It is not a de Polignac number, because 68811413183 - 236 = 91936447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68811412183) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9124835 + ... + 9132372.

It is an arithmetic number, because the mean of its divisors is an integer number (17207418540).

Almost surely, 268811413183 is an apocalyptic number.

68811413183 is a deficient number, since it is larger than the sum of its proper divisors (18260977).

68811413183 is a wasteful number, since it uses less digits than its factorization.

68811413183 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18260976.

The product of its digits is 110592, while the sum is 44.

The spelling of 68811413183 in words is "sixty-eight billion, eight hundred eleven million, four hundred thirteen thousand, one hundred eighty-three".

Divisors: 1 3769 18257207 68811413183