12534563643001 has 2 divisors, whose sum is σ = 12534563643002. Its totient is φ = 12534563643000.

The previous prime is 12534563642999. The next prime is 12534563643047. The reversal of 12534563643001 is 10034636543521.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10925014700601 + 1609548942400 = 3305301^2 + 1268680^2 .

It is a cyclic number.

It is not a de Polignac number, because 12534563643001 - 2¹ = 12534563642999 is a prime.

Together with 12534563642999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (12534563641001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6267281821500 + 6267281821501.

It is an arithmetic number, because the mean of its divisors is an integer number (6267281821501).

Almost surely, 2^{12534563643001} is an apocalyptic number.

It is an amenable number.

12534563643001 is a deficient number, since it is larger than the sum of its proper divisors (1).

12534563643001 is an equidigital number, since it uses as much as digits as its factorization.

12534563643001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 43.

The spelling of 12534563643001 in words is "twelve trillion, five hundred thirty-four billion, five hundred sixty-three million, six hundred forty-three thousand, one".