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68224806694 = 21161392312959
BaseRepresentation
bin111111100010100000…
…111110111100100110
320112002201000021110101
4333202200332330212
52104211022303234
651201514214314
74633450200652
oct774240767446
9215081007411
1068224806694
1126a30141070
121128042439a
136583731805
143432d59a62
151b94857814
hexfe283ef26

68224806694 has 32 divisors (see below), whose sum is σ = 113508449280. Its totient is φ = 30492765600.

The previous prime is 68224806679. The next prime is 68224806697. The reversal of 68224806694 is 49660842286.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68224806697) 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, 5258187 + ... + 5271145.

It is an arithmetic number, because the mean of its divisors is an integer number (3547139040).

Almost surely, 268224806694 is an apocalyptic number.

68224806694 is a deficient number, since it is larger than the sum of its proper divisors (45283642586).

68224806694 is a wasteful number, since it uses less digits than its factorization.

68224806694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16956.

The product of its (nonzero) digits is 7962624, while the sum is 55.

The spelling of 68224806694 in words is "sixty-eight billion, two hundred twenty-four million, eight hundred six thousand, six hundred ninety-four".

Divisors: 1 2 11 22 61 122 671 1342 3923 7846 12959 25918 43153 86306 142549 239303 285098 478606 790499 1580998 2632333 5264666 8695489 17390978 50838157 101676314 559219727 1118439454 3101127577 6202255154 34112403347 68224806694