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13968750815 = 531611477393
BaseRepresentation
bin11010000001001101…
…00011100011011111
31100001111200001202022
431000212203203133
5212102000011230
610230034450355
71003105265015
oct150046434337
940044601668
1013968750815
115a18aa5268
12285a1339bb
131417cba436
149672a08b5
1556b50e1e5
hex3409a38df

13968750815 has 16 divisors (see below), whose sum is σ = 17586898176. Its totient is φ = 10637222400.

The previous prime is 13968750781. The next prime is 13968750841. The reversal of 13968750815 is 51805786931.

13968750815 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13968750815 - 26 = 13968750751 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 729242 + ... + 748151.

It is an arithmetic number, because the mean of its divisors is an integer number (1099181136).

Almost surely, 213968750815 is an apocalyptic number.

13968750815 is a deficient number, since it is larger than the sum of its proper divisors (3618147361).

13968750815 is a wasteful number, since it uses less digits than its factorization.

13968750815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477490.

The product of its (nonzero) digits is 1814400, while the sum is 53.

The spelling of 13968750815 in words is "thirteen billion, nine hundred sixty-eight million, seven hundred fifty thousand, eight hundred fifteen".

Divisors: 1 5 31 61 155 305 1891 9455 1477393 7386965 45799183 90120973 228995915 450604865 2793750163 13968750815