11543235019 has 2 divisors, whose sum is σ = 11543235020. Its totient is φ = 11543235018.

The previous prime is 11543235013. The next prime is 11543235071. The reversal of 11543235019 is 91053234511.

It is a weak prime.

It is an emirp because it is prime and its reverse (91053234511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11543235019 - 2⁵ = 11543234987 is a prime.

It is a super-2 number, since 2×11543235019² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (11543235013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5771617509 + 5771617510.

It is an arithmetic number, because the mean of its divisors is an integer number (5771617510).

Almost surely, 2^11543235019 is an apocalyptic number.

11543235019 is a deficient number, since it is larger than the sum of its proper divisors (1).

11543235019 is an equidigital number, since it uses as much as digits as its factorization.

11543235019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16200, while the sum is 34.

The spelling of 11543235019 in words is "eleven billion, five hundred forty-three million, two hundred thirty-five thousand, nineteen".