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12768788371 = 85714899403
BaseRepresentation
bin10111110010001010…
…00011111110010011
31012221212201122201211
423321011003332103
5202122302211441
65511011240551
7631264624153
oct137105037623
935855648654
1012768788371
115462714769
1225842a9157
13128650a0a1
14891b80763
154eaecea81
hex2f9143f93

12768788371 has 4 divisors (see below), whose sum is σ = 12783688632. Its totient is φ = 12753888112.

The previous prime is 12768788341. The next prime is 12768788401. The reversal of 12768788371 is 17388786721.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12768788341) and next prime (12768788401).

It is a cyclic number.

It is not a de Polignac number, because 12768788371 - 225 = 12735233939 is a prime.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12768788341) 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, 7448845 + ... + 7450558.

It is an arithmetic number, because the mean of its divisors is an integer number (3195922158).

Almost surely, 212768788371 is an apocalyptic number.

12768788371 is a deficient number, since it is larger than the sum of its proper divisors (14900261).

12768788371 is an equidigital number, since it uses as much as digits as its factorization.

12768788371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14900260.

The product of its digits is 6322176, while the sum is 58.

The spelling of 12768788371 in words is "twelve billion, seven hundred sixty-eight million, seven hundred eighty-eight thousand, three hundred seventy-one".

Divisors: 1 857 14899403 12768788371