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68858535317 = 11131249385531
BaseRepresentation
bin100000000100001001…
…0011101110110010101
320120201212111000200212
41000020102131312111
52112010241112232
651344433215205
74655243615165
oct1001022356625
9216655430625
1068858535317
1127225936830
1211418701505
136654b09570
1434931a25a5
151bd02d8eb2
hex100849dd95

68858535317 has 16 divisors (see below), whose sum is σ = 80961720000. Its totient is φ = 57736972800.

The previous prime is 68858535253. The next prime is 68858535331. The reversal of 68858535317 is 71353585886.

It is not a de Polignac number, because 68858535317 - 26 = 68858535253 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 (68858535367) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14159 + ... + 371372.

It is an arithmetic number, because the mean of its divisors is an integer number (5060107500).

Almost surely, 268858535317 is an apocalyptic number.

It is an amenable number.

68858535317 is a deficient number, since it is larger than the sum of its proper divisors (12103184683).

68858535317 is a wasteful number, since it uses less digits than its factorization.

68858535317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 386804.

The product of its digits is 24192000, while the sum is 59.

The spelling of 68858535317 in words is "sixty-eight billion, eight hundred fifty-eight million, five hundred thirty-five thousand, three hundred seventeen".

Divisors: 1 11 13 143 1249 13739 16237 178607 385531 4240841 5011903 55130933 481528219 5296810409 6259866847 68858535317