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12780183361 = 111573373847
BaseRepresentation
bin10111110011100001…
…00001111101000001
31012222200011120201111
423321300201331001
5202133211331421
65512055403321
7631463523541
oct137160417501
935880146644
1012780183361
115469097a10
122588083541
13128899989a
148934a9321
154ebed0ee1
hex2f9c21f41

12780183361 has 8 divisors (see below), whose sum is σ = 13943093184. Its totient is φ = 11617452720.

The previous prime is 12780183337. The next prime is 12780183421. The reversal of 12780183361 is 16338108721.

12780183361 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12780183361 - 223 = 12771794753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12780183301) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 136140 + ... + 209986.

It is an arithmetic number, because the mean of its divisors is an integer number (1742886648).

Almost surely, 212780183361 is an apocalyptic number.

12780183361 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12780183361 is a deficient number, since it is larger than the sum of its proper divisors (1162909823).

12780183361 is a wasteful number, since it uses less digits than its factorization.

12780183361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89591.

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 12780183361 in words is "twelve billion, seven hundred eighty million, one hundred eighty-three thousand, three hundred sixty-one".

Divisors: 1 11 15733 73847 173063 812317 1161834851 12780183361