11891225443 has 2 divisors, whose sum is σ = 11891225444. Its totient is φ = 11891225442.

The previous prime is 11891225419. The next prime is 11891225471. The reversal of 11891225443 is 34452219811.

11891225443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11891225443 - 2²⁵ = 11857671011 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 11891225396 and 11891225405.

It is not a weakly prime, because it can be changed into another prime (11891226443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5945612721 + 5945612722.

It is an arithmetic number, because the mean of its divisors is an integer number (5945612722).

Almost surely, 2^11891225443 is an apocalyptic number.

11891225443 is a deficient number, since it is larger than the sum of its proper divisors (1).

11891225443 is an equidigital number, since it uses as much as digits as its factorization.

11891225443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69120, while the sum is 40.

The spelling of 11891225443 in words is "eleven billion, eight hundred ninety-one million, two hundred twenty-five thousand, four hundred forty-three".