11748559309 has 4 divisors (see below), whose sum is σ = 11998528704. Its totient is φ = 11498589916.

The previous prime is 11748559301. The next prime is 11748559327. The reversal of 11748559309 is 90395584711.

11748559309 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, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90395584711 = 47 ⋅1923310313.

It is a cyclic number.

It is not a de Polignac number, because 11748559309 - 2³ = 11748559301 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11748559301) 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 in 3 ways as a sum of consecutive naturals, for example, 124984627 + ... + 124984720.

It is an arithmetic number, because the mean of its divisors is an integer number (2999632176).

Almost surely, 2^11748559309 is an apocalyptic number.

It is an amenable number.

11748559309 is a deficient number, since it is larger than the sum of its proper divisors (249969395).

11748559309 is an equidigital number, since it uses as much as digits as its factorization.

11748559309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249969394.

The product of its (nonzero) digits is 1360800, while the sum is 52.

The spelling of 11748559309 in words is "eleven billion, seven hundred forty-eight million, five hundred fifty-nine thousand, three hundred nine".