11199243542 has 4 divisors (see below), whose sum is σ = 16798865316. Its totient is φ = 5599621770.

The previous prime is 11199243541. The next prime is 11199243557. The reversal of 11199243542 is 24534299111.

It is a happy number.

11199243542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 11199243542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11199243541) 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, 2799810884 + ... + 2799810887.

It is an arithmetic number, because the mean of its divisors is an integer number (4199716329).

Almost surely, 2^11199243542 is an apocalyptic number.

11199243542 is a deficient number, since it is larger than the sum of its proper divisors (5599621774).

11199243542 is an equidigital number, since it uses as much as digits as its factorization.

11199243542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5599621773.

The product of its digits is 77760, while the sum is 41.

The spelling of 11199243542 in words is "eleven billion, one hundred ninety-nine million, two hundred forty-three thousand, five hundred forty-two".