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6813480143 = 54517124979
BaseRepresentation
bin1100101100001110…
…10111010011001111
3122120211202122122102
412112013113103033
5102423222331033
63044032305315
7330562424411
oct62607272317
918524678572
106813480143
112987039528
1213a19a223b
1384778b572
14488c869b1
1529d273de8
hex1961d74cf

6813480143 has 4 divisors (see below), whose sum is σ = 6813659640. Its totient is φ = 6813300648.

The previous prime is 6813480119. The next prime is 6813480203. The reversal of 6813480143 is 3410843186.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3410843186 = 21705421593.

It is a cyclic number.

It is not a de Polignac number, because 6813480143 - 28 = 6813479887 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6813480097 and 6813480106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6813410143) 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 3 ways as a sum of consecutive naturals, for example, 7973 + ... + 117006.

It is an arithmetic number, because the mean of its divisors is an integer number (1703414910).

Almost surely, 26813480143 is an apocalyptic number.

6813480143 is a deficient number, since it is larger than the sum of its proper divisors (179497).

6813480143 is a wasteful number, since it uses less digits than its factorization.

6813480143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179496.

The product of its (nonzero) digits is 55296, while the sum is 38.

The square root of 6813480143 is about 82543.8074176373. The cubic root of 6813480143 is about 1895.7875413058.

The spelling of 6813480143 in words is "six billion, eight hundred thirteen million, four hundred eighty thousand, one hundred forty-three".

Divisors: 1 54517 124979 6813480143