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68088833888087 = 671016251252061
BaseRepresentation
bin11110111101101001010101…
…10000011100111101010111
322221002020011220102000010202
433132310222300130331113
532411031412433404322
6400451324541011115
720225153530514225
oct1736645260347527
9287066156360122
1068088833888087
111a771348726281
1277780a4853a9b
132bcb99880706c
1412b5735085b15
157d1230800292
hex3ded2ac1cf57

68088833888087 has 4 divisors (see below), whose sum is σ = 69105085140216. Its totient is φ = 67072582635960.

The previous prime is 68088833888081. The next prime is 68088833888191. The reversal of 68088833888087 is 78088833888086.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 68088833888087 - 28 = 68088833887831 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 68088833887996 and 68088833888014.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68088833888081) 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, 508125625964 + ... + 508125626097.

It is an arithmetic number, because the mean of its divisors is an integer number (17276271285054).

Almost surely, 268088833888087 is an apocalyptic number.

68088833888087 is a gapful number since it is divisible by the number (67) formed by its first and last digit.

68088833888087 is a deficient number, since it is larger than the sum of its proper divisors (1016251252129).

68088833888087 is a wasteful number, since it uses less digits than its factorization.

68088833888087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1016251252128.

The product of its (nonzero) digits is 6341787648, while the sum is 83.

Subtracting 68088833888087 from its reverse (78088833888086), we obtain a palindrome (9999999999999).

The spelling of 68088833888087 in words is "sixty-eight trillion, eighty-eight billion, eight hundred thirty-three million, eight hundred eighty-eight thousand, eighty-seven".

Divisors: 1 67 1016251252061 68088833888087