11409456538 has 4 divisors (see below), whose sum is σ = 17114184810. Its totient is φ = 5704728268.

The previous prime is 11409456529. The next prime is 11409456563. The reversal of 11409456538 is 83565490411.

11409456538 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 can be written as a sum of positive squares in only one way, i.e., 11409016969 + 439569 = 106813^2 + 663^2 .

It is an unprimeable number.

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, 2852364133 + ... + 2852364136.

Almost surely, 2^11409456538 is an apocalyptic number.

11409456538 is a deficient number, since it is larger than the sum of its proper divisors (5704728272).

11409456538 is an equidigital number, since it uses as much as digits as its factorization.

11409456538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5704728271.

The product of its (nonzero) digits is 518400, while the sum is 46.

The spelling of 11409456538 in words is "eleven billion, four hundred nine million, four hundred fifty-six thousand, five hundred thirty-eight".