12643430111141 has 8 divisors (see below), whose sum is σ = 12652797927000. Its totient is φ = 12634065607680.

The previous prime is 12643430111087. The next prime is 12643430111171. The reversal of 12643430111141 is 14111103434621.

It can be written as a sum of positive squares in 4 ways, for example, as 967055892100 + 11676374219041 = 983390^2 + 3417071^2 .

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 12643430111141 - 2²² = 12643425916837 is a prime.

It is a super-2 number, since 2×12643430111141² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12643430111098 and 12643430111107.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12643430111171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6834965 + ... + 8485493.

It is an arithmetic number, because the mean of its divisors is an integer number (1581599740875).

Almost surely, 2^{12643430111141} is an apocalyptic number.

It is an amenable number.

12643430111141 is a deficient number, since it is larger than the sum of its proper divisors (9367815859).

12643430111141 is a wasteful number, since it uses less digits than its factorization.

12643430111141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656199.

The product of its (nonzero) digits is 6912, while the sum is 32.

Adding to 12643430111141 its reverse (14111103434621), we get a palindrome (26754533545762).

The spelling of 12643430111141 in words is "twelve trillion, six hundred forty-three billion, four hundred thirty million, one hundred eleven thousand, one hundred forty-one".