11869105549 has 4 divisors (see below), whose sum is σ = 13564692064. Its totient is φ = 10173519036.

The previous prime is 11869105537. The next prime is 11869105553. The reversal of 11869105549 is 94550196811.

It is a happy number.

11869105549 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.

It is a cyclic number.

It is not a de Polignac number, because 11869105549 - 2³¹ = 9721621901 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11869105519) 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, 847793247 + ... + 847793260.

It is an arithmetic number, because the mean of its divisors is an integer number (3391173016).

Almost surely, 2^11869105549 is an apocalyptic number.

It is an amenable number.

11869105549 is a deficient number, since it is larger than the sum of its proper divisors (1695586515).

11869105549 is an equidigital number, since it uses as much as digits as its factorization.

11869105549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695586514.

The product of its (nonzero) digits is 388800, while the sum is 49.

The spelling of 11869105549 in words is "eleven billion, eight hundred sixty-nine million, one hundred five thousand, five hundred forty-nine".