11421819043 has 2 divisors, whose sum is σ = 11421819044. Its totient is φ = 11421819042.

The previous prime is 11421819023. The next prime is 11421819109. The reversal of 11421819043 is 34091812411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 11421819043 - 2⁹ = 11421818531 is a prime.

It is not a weakly prime, because it can be changed into another prime (11421819023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5710909521 + 5710909522.

It is an arithmetic number, because the mean of its divisors is an integer number (5710909522).

Almost surely, 2^11421819043 is an apocalyptic number.

11421819043 is a deficient number, since it is larger than the sum of its proper divisors (1).

11421819043 is an equidigital number, since it uses as much as digits as its factorization.

11421819043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 34.

The spelling of 11421819043 in words is "eleven billion, four hundred twenty-one million, eight hundred nineteen thousand, forty-three".