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68896289279 = 241349819131
BaseRepresentation
bin100000000101010001…
…0011111000111111111
320120211111112010101202
41000022202133013333
52112044422224104
651352302330115
74656212540066
oct1001242370777
9216744463352
1068896289279
1127245182954
121142928993b
13665c89799c
1434981cd1dd
151bd379551e
hex100a89f1ff

68896289279 has 8 divisors (see below), whose sum is σ = 69380480400. Its totient is φ = 68413737600.

The previous prime is 68896289269. The next prime is 68896289323. The reversal of 68896289279 is 97298269886.

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 68896289279 - 24 = 68896289263 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 (68896289269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325457 + ... + 493674.

It is an arithmetic number, because the mean of its divisors is an integer number (8672560050).

Almost surely, 268896289279 is an apocalyptic number.

68896289279 is a deficient number, since it is larger than the sum of its proper divisors (484191121).

68896289279 is a wasteful number, since it uses less digits than its factorization.

68896289279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 819721.

The product of its digits is 376233984, while the sum is 74.

The spelling of 68896289279 in words is "sixty-eight billion, eight hundred ninety-six million, two hundred eighty-nine thousand, two hundred seventy-nine".

Divisors: 1 241 349 84109 819131 197410571 285876719 68896289279