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68238016473 = 31117293941387
BaseRepresentation
bin111111100011010011…
…010111111111011001
320112010121212101212110
4333203103113333121
52104222413011343
651203105302533
74634000366304
oct774323277731
9215117771773
1068238016473
1126a37643840
1211284934a49
1365863a8353
1434349d7b3b
151b95ab6833
hexfe34d7fd9

68238016473 has 32 divisors (see below), whose sum is σ = 105132142080. Its totient is φ = 38909461760.

The previous prime is 68238016453. The next prime is 68238016481. The reversal of 68238016473 is 37461083286.

It is a cyclic number.

It is not a de Polignac number, because 68238016473 - 26 = 68238016409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68238016403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1628086 + ... + 1669472.

It is an arithmetic number, because the mean of its divisors is an integer number (3285379440).

Almost surely, 268238016473 is an apocalyptic number.

It is an amenable number.

68238016473 is a deficient number, since it is larger than the sum of its proper divisors (36894125607).

68238016473 is a wasteful number, since it uses less digits than its factorization.

68238016473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44357.

The product of its (nonzero) digits is 1161216, while the sum is 48.

The spelling of 68238016473 in words is "sixty-eight billion, two hundred thirty-eight million, sixteen thousand, four hundred seventy-three".

Divisors: 1 3 11 17 33 51 187 561 2939 8817 32329 41387 49963 96987 124161 149889 455257 549593 703579 1365771 1648779 2110737 7739369 23218107 121636393 364909179 1338000323 2067818681 4014000969 6203456043 22746005491 68238016473