11012261311543 has 2 divisors, whose sum is σ = 11012261311544. Its totient is φ = 11012261311542.

The previous prime is 11012261311529. The next prime is 11012261311607. The reversal of 11012261311543 is 34511316221011.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11012261311543 - 2⁵ = 11012261311511 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11012261317543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5506130655771 + 5506130655772.

It is an arithmetic number, because the mean of its divisors is an integer number (5506130655772).

Almost surely, 2^{11012261311543} is an apocalyptic number.

11012261311543 is a deficient number, since it is larger than the sum of its proper divisors (1).

11012261311543 is an equidigital number, since it uses as much as digits as its factorization.

11012261311543 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 31.

Adding to 11012261311543 its reverse (34511316221011), we get a palindrome (45523577532554).

The spelling of 11012261311543 in words is "eleven trillion, twelve billion, two hundred sixty-one million, three hundred eleven thousand, five hundred forty-three".