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68289768911 = 713750437021
BaseRepresentation
bin111111100110011000…
…110010110111001111
320112021020020200212102
4333212120302313033
52104324140101121
651212154425315
74635166313120
oct774630626717
9215236220772
1068289768911
1126a63881151
121129a13223b
1365940282b0
14343b82a047
151b9a3da90b
hexfe6632dcf

68289768911 has 8 divisors (see below), whose sum is σ = 84048946464. Its totient is φ = 54031465440.

The previous prime is 68289768871. The next prime is 68289768919. The reversal of 68289768911 is 11986798286.

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

It is a cyclic number.

It is not a de Polignac number, because 68289768911 - 218 = 68289506767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68289768919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 375218420 + ... + 375218601.

It is an arithmetic number, because the mean of its divisors is an integer number (10506118308).

Almost surely, 268289768911 is an apocalyptic number.

68289768911 is a deficient number, since it is larger than the sum of its proper divisors (15759177553).

68289768911 is a wasteful number, since it uses less digits than its factorization.

68289768911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 750437041.

The product of its digits is 20901888, while the sum is 65.

The spelling of 68289768911 in words is "sixty-eight billion, two hundred eighty-nine million, seven hundred sixty-eight thousand, nine hundred eleven".

Divisors: 1 7 13 91 750437021 5253059147 9755681273 68289768911