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68236814723 = 7111144777417
BaseRepresentation
bin111111100011001110…
…110010100110000011
320112010112121100101012
4333203032302212003
52104222111032343
651203023431135
74633654232540
oct774316624603
9215115540335
1068236814723
1126a369a2960
12112844554ab
13658607735c
1434347a3bc7
151b9592a718
hexfe33b2983

68236814723 has 16 divisors (see below), whose sum is σ = 85083001344. Its totient is φ = 53166212160.

The previous prime is 68236814717. The next prime is 68236814729. The reversal of 68236814723 is 32741863286.

It is an interprime number because it is at equal distance from previous prime (68236814717) and next prime (68236814729).

It is a cyclic number.

It is not a de Polignac number, because 68236814723 - 28 = 68236814467 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68236814729) 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, 842711 + ... + 920127.

It is an arithmetic number, because the mean of its divisors is an integer number (5317687584).

Almost surely, 268236814723 is an apocalyptic number.

68236814723 is a deficient number, since it is larger than the sum of its proper divisors (16846186621).

68236814723 is a wasteful number, since it uses less digits than its factorization.

68236814723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88882.

The product of its digits is 2322432, while the sum is 50.

The spelling of 68236814723 in words is "sixty-eight billion, two hundred thirty-six million, eight hundred fourteen thousand, seven hundred twenty-three".

Divisors: 1 7 11 77 11447 77417 80129 125917 541919 851587 881419 5961109 886192399 6203346793 9748116389 68236814723