11783444449 has 4 divisors (see below), whose sum is σ = 13466793664. Its totient is φ = 10100095236.

The previous prime is 11783444417. The next prime is 11783444471. The reversal of 11783444449 is 94444438711.

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: 94444438711 = 7 ⋅13492062673.

It is not a de Polignac number, because 11783444449 - 2⁵ = 11783444417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11783444489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 841674597 + ... + 841674610.

It is an arithmetic number, because the mean of its divisors is an integer number (3366698416).

Almost surely, 2^11783444449 is an apocalyptic number.

It is an amenable number.

11783444449 is a deficient number, since it is larger than the sum of its proper divisors (1683349215).

11783444449 is an equidigital number, since it uses as much as digits as its factorization.

11783444449 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683349214.

The product of its digits is 1548288, while the sum is 49.

The spelling of 11783444449 in words is "eleven billion, seven hundred eighty-three million, four hundred forty-four thousand, four hundred forty-nine".