11355043909 has 16 divisors (see below), whose sum is σ = 12803028480. Its totient is φ = 9977184000.

The previous prime is 11355043859. The next prime is 11355043919. The reversal of 11355043909 is 90934055311.

It is a cyclic number.

It is not a de Polignac number, because 11355043909 - 2²⁹ = 10818172997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11355043919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255289 + ... + 296449.

It is an arithmetic number, because the mean of its divisors is an integer number (800189280).

Almost surely, 2^11355043909 is an apocalyptic number.

It is an amenable number.

11355043909 is a deficient number, since it is larger than the sum of its proper divisors (1447984571).

11355043909 is a wasteful number, since it uses less digits than its factorization.

11355043909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42012.

The product of its (nonzero) digits is 72900, while the sum is 40.

The spelling of 11355043909 in words is "eleven billion, three hundred fifty-five million, forty-three thousand, nine hundred nine".