11043891841 has 2 divisors, whose sum is σ = 11043891842. Its totient is φ = 11043891840.

The previous prime is 11043891839. The next prime is 11043891847. The reversal of 11043891841 is 14819834011.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10625280241 + 418611600 = 103079^2 + 20460^2 .

It is a cyclic number.

It is not a de Polignac number, because 11043891841 - 2¹ = 11043891839 is a prime.

Together with 11043891839, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 11043891794 and 11043891803.

It is not a weakly prime, because it can be changed into another prime (11043891847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5521945920 + 5521945921.

It is an arithmetic number, because the mean of its divisors is an integer number (5521945921).

Almost surely, 2^11043891841 is an apocalyptic number.

It is an amenable number.

11043891841 is a deficient number, since it is larger than the sum of its proper divisors (1).

11043891841 is an equidigital number, since it uses as much as digits as its factorization.

11043891841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 40.

The spelling of 11043891841 in words is "eleven billion, forty-three million, eight hundred ninety-one thousand, eight hundred forty-one".