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12663433141 = 15678081323
BaseRepresentation
bin10111100101100110…
…01010011110110101
31012200112111001112021
423302303022132311
5201413314330031
65452325153141
7625545256102
oct136263123665
935615431467
1012663433141
1154091a5827
122554b5b7b1
13126a73cc08
14881b97aa9
154e1b1d511
hex2f2cca7b5

12663433141 has 4 divisors (see below), whose sum is σ = 12671516032. Its totient is φ = 12655350252.

The previous prime is 12663433091. The next prime is 12663433157. The reversal of 12663433141 is 14133436621.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14133436621 = 53161265861.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-12663433141 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12663433097 and 12663433106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12663433171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4039095 + ... + 4042228.

It is an arithmetic number, because the mean of its divisors is an integer number (3167879008).

Almost surely, 212663433141 is an apocalyptic number.

It is an amenable number.

12663433141 is a deficient number, since it is larger than the sum of its proper divisors (8082891).

12663433141 is an equidigital number, since it uses as much as digits as its factorization.

12663433141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8082890.

The product of its digits is 31104, while the sum is 34.

Adding to 12663433141 its reverse (14133436621), we get a palindrome (26796869762).

The spelling of 12663433141 in words is "twelve billion, six hundred sixty-three million, four hundred thirty-three thousand, one hundred forty-one".

Divisors: 1 1567 8081323 12663433141